Squashed 'third_party/rawrtc/usrsctp/' content from commit bd1a92db3
Change-Id: If227cd6edd3243ac26044056b7427ae5bca71ef8
git-subtree-dir: third_party/rawrtc/usrsctp
git-subtree-split: bd1a92db338ba1e57453637959a127032bb566ff
diff --git a/usrsctplib/netinet/sctputil.c b/usrsctplib/netinet/sctputil.c
new file mode 100755
index 0000000..87e7774
--- /dev/null
+++ b/usrsctplib/netinet/sctputil.c
@@ -0,0 +1,8174 @@
+/*-
+ * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
+ * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
+ * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * a) Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * b) Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the distribution.
+ *
+ * c) Neither the name of Cisco Systems, Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef __FreeBSD__
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: head/sys/netinet/sctputil.c 310590 2016-12-26 11:06:41Z tuexen $");
+#endif
+
+#include <netinet/sctp_os.h>
+#include <netinet/sctp_pcb.h>
+#include <netinet/sctputil.h>
+#include <netinet/sctp_var.h>
+#include <netinet/sctp_sysctl.h>
+#ifdef INET6
+#if defined(__Userspace__) || defined(__FreeBSD__)
+#include <netinet6/sctp6_var.h>
+#endif
+#endif
+#include <netinet/sctp_header.h>
+#include <netinet/sctp_output.h>
+#include <netinet/sctp_uio.h>
+#include <netinet/sctp_timer.h>
+#include <netinet/sctp_indata.h>/* for sctp_deliver_data() */
+#include <netinet/sctp_auth.h>
+#include <netinet/sctp_asconf.h>
+#include <netinet/sctp_bsd_addr.h>
+#if defined(__Userspace__)
+#include <netinet/sctp_constants.h>
+#endif
+#if defined(__FreeBSD__)
+#include <netinet/udp.h>
+#include <netinet/udp_var.h>
+#include <sys/proc.h>
+#ifdef INET6
+#include <netinet/icmp6.h>
+#endif
+#endif
+
+#if defined(__APPLE__)
+#define APPLE_FILE_NO 8
+#endif
+
+#if defined(__Windows__)
+#if !defined(SCTP_LOCAL_TRACE_BUF)
+#include "eventrace_netinet.h"
+#include "sctputil.tmh" /* this is the file that will be auto generated */
+#endif
+#else
+#ifndef KTR_SCTP
+#define KTR_SCTP KTR_SUBSYS
+#endif
+#endif
+
+extern const struct sctp_cc_functions sctp_cc_functions[];
+extern const struct sctp_ss_functions sctp_ss_functions[];
+
+void
+sctp_sblog(struct sockbuf *sb, struct sctp_tcb *stcb, int from, int incr)
+{
+#if defined(__FreeBSD__) || defined(SCTP_LOCAL_TRACE_BUF)
+ struct sctp_cwnd_log sctp_clog;
+
+ sctp_clog.x.sb.stcb = stcb;
+ sctp_clog.x.sb.so_sbcc = sb->sb_cc;
+ if (stcb)
+ sctp_clog.x.sb.stcb_sbcc = stcb->asoc.sb_cc;
+ else
+ sctp_clog.x.sb.stcb_sbcc = 0;
+ sctp_clog.x.sb.incr = incr;
+ SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
+ SCTP_LOG_EVENT_SB,
+ from,
+ sctp_clog.x.misc.log1,
+ sctp_clog.x.misc.log2,
+ sctp_clog.x.misc.log3,
+ sctp_clog.x.misc.log4);
+#endif
+}
+
+void
+sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc)
+{
+#if defined(__FreeBSD__) || defined(SCTP_LOCAL_TRACE_BUF)
+ struct sctp_cwnd_log sctp_clog;
+
+ sctp_clog.x.close.inp = (void *)inp;
+ sctp_clog.x.close.sctp_flags = inp->sctp_flags;
+ if (stcb) {
+ sctp_clog.x.close.stcb = (void *)stcb;
+ sctp_clog.x.close.state = (uint16_t)stcb->asoc.state;
+ } else {
+ sctp_clog.x.close.stcb = 0;
+ sctp_clog.x.close.state = 0;
+ }
+ sctp_clog.x.close.loc = loc;
+ SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
+ SCTP_LOG_EVENT_CLOSE,
+ 0,
+ sctp_clog.x.misc.log1,
+ sctp_clog.x.misc.log2,
+ sctp_clog.x.misc.log3,
+ sctp_clog.x.misc.log4);
+#endif
+}
+
+void
+rto_logging(struct sctp_nets *net, int from)
+{
+#if defined(__FreeBSD__) || defined(SCTP_LOCAL_TRACE_BUF)
+ struct sctp_cwnd_log sctp_clog;
+
+ memset(&sctp_clog, 0, sizeof(sctp_clog));
+ sctp_clog.x.rto.net = (void *) net;
+ sctp_clog.x.rto.rtt = net->rtt / 1000;
+ SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
+ SCTP_LOG_EVENT_RTT,
+ from,
+ sctp_clog.x.misc.log1,
+ sctp_clog.x.misc.log2,
+ sctp_clog.x.misc.log3,
+ sctp_clog.x.misc.log4);
+#endif
+}
+
+void
+sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t tsn, uint16_t sseq, uint16_t stream, int from)
+{
+#if defined(__FreeBSD__) || defined(SCTP_LOCAL_TRACE_BUF)
+ struct sctp_cwnd_log sctp_clog;
+
+ sctp_clog.x.strlog.stcb = stcb;
+ sctp_clog.x.strlog.n_tsn = tsn;
+ sctp_clog.x.strlog.n_sseq = sseq;
+ sctp_clog.x.strlog.e_tsn = 0;
+ sctp_clog.x.strlog.e_sseq = 0;
+ sctp_clog.x.strlog.strm = stream;
+ SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
+ SCTP_LOG_EVENT_STRM,
+ from,
+ sctp_clog.x.misc.log1,
+ sctp_clog.x.misc.log2,
+ sctp_clog.x.misc.log3,
+ sctp_clog.x.misc.log4);
+#endif
+}
+
+void
+sctp_log_nagle_event(struct sctp_tcb *stcb, int action)
+{
+#if defined(__FreeBSD__) || defined(SCTP_LOCAL_TRACE_BUF)
+ struct sctp_cwnd_log sctp_clog;
+
+ sctp_clog.x.nagle.stcb = (void *)stcb;
+ sctp_clog.x.nagle.total_flight = stcb->asoc.total_flight;
+ sctp_clog.x.nagle.total_in_queue = stcb->asoc.total_output_queue_size;
+ sctp_clog.x.nagle.count_in_queue = stcb->asoc.chunks_on_out_queue;
+ sctp_clog.x.nagle.count_in_flight = stcb->asoc.total_flight_count;
+ SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
+ SCTP_LOG_EVENT_NAGLE,
+ action,
+ sctp_clog.x.misc.log1,
+ sctp_clog.x.misc.log2,
+ sctp_clog.x.misc.log3,
+ sctp_clog.x.misc.log4);
+#endif
+}
+
+void
+sctp_log_sack(uint32_t old_cumack, uint32_t cumack, uint32_t tsn, uint16_t gaps, uint16_t dups, int from)
+{
+#if defined(__FreeBSD__) || defined(SCTP_LOCAL_TRACE_BUF)
+ struct sctp_cwnd_log sctp_clog;
+
+ sctp_clog.x.sack.cumack = cumack;
+ sctp_clog.x.sack.oldcumack = old_cumack;
+ sctp_clog.x.sack.tsn = tsn;
+ sctp_clog.x.sack.numGaps = gaps;
+ sctp_clog.x.sack.numDups = dups;
+ SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
+ SCTP_LOG_EVENT_SACK,
+ from,
+ sctp_clog.x.misc.log1,
+ sctp_clog.x.misc.log2,
+ sctp_clog.x.misc.log3,
+ sctp_clog.x.misc.log4);
+#endif
+}
+
+void
+sctp_log_map(uint32_t map, uint32_t cum, uint32_t high, int from)
+{
+#if defined(__FreeBSD__) || defined(SCTP_LOCAL_TRACE_BUF)
+ struct sctp_cwnd_log sctp_clog;
+
+ memset(&sctp_clog, 0, sizeof(sctp_clog));
+ sctp_clog.x.map.base = map;
+ sctp_clog.x.map.cum = cum;
+ sctp_clog.x.map.high = high;
+ SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
+ SCTP_LOG_EVENT_MAP,
+ from,
+ sctp_clog.x.misc.log1,
+ sctp_clog.x.misc.log2,
+ sctp_clog.x.misc.log3,
+ sctp_clog.x.misc.log4);
+#endif
+}
+
+void
+sctp_log_fr(uint32_t biggest_tsn, uint32_t biggest_new_tsn, uint32_t tsn, int from)
+{
+#if defined(__FreeBSD__) || defined(SCTP_LOCAL_TRACE_BUF)
+ struct sctp_cwnd_log sctp_clog;
+
+ memset(&sctp_clog, 0, sizeof(sctp_clog));
+ sctp_clog.x.fr.largest_tsn = biggest_tsn;
+ sctp_clog.x.fr.largest_new_tsn = biggest_new_tsn;
+ sctp_clog.x.fr.tsn = tsn;
+ SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
+ SCTP_LOG_EVENT_FR,
+ from,
+ sctp_clog.x.misc.log1,
+ sctp_clog.x.misc.log2,
+ sctp_clog.x.misc.log3,
+ sctp_clog.x.misc.log4);
+#endif
+}
+
+#ifdef SCTP_MBUF_LOGGING
+void
+sctp_log_mb(struct mbuf *m, int from)
+{
+#if defined(__FreeBSD__) || defined(SCTP_LOCAL_TRACE_BUF)
+ struct sctp_cwnd_log sctp_clog;
+
+ sctp_clog.x.mb.mp = m;
+ sctp_clog.x.mb.mbuf_flags = (uint8_t)(SCTP_BUF_GET_FLAGS(m));
+ sctp_clog.x.mb.size = (uint16_t)(SCTP_BUF_LEN(m));
+ sctp_clog.x.mb.data = SCTP_BUF_AT(m, 0);
+ if (SCTP_BUF_IS_EXTENDED(m)) {
+ sctp_clog.x.mb.ext = SCTP_BUF_EXTEND_BASE(m);
+#if defined(__APPLE__)
+ /* APPLE does not use a ref_cnt, but a forward/backward ref queue */
+#else
+ sctp_clog.x.mb.refcnt = (uint8_t)(SCTP_BUF_EXTEND_REFCNT(m));
+#endif
+ } else {
+ sctp_clog.x.mb.ext = 0;
+ sctp_clog.x.mb.refcnt = 0;
+ }
+ SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
+ SCTP_LOG_EVENT_MBUF,
+ from,
+ sctp_clog.x.misc.log1,
+ sctp_clog.x.misc.log2,
+ sctp_clog.x.misc.log3,
+ sctp_clog.x.misc.log4);
+#endif
+}
+
+void
+sctp_log_mbc(struct mbuf *m, int from)
+{
+ struct mbuf *mat;
+
+ for (mat = m; mat; mat = SCTP_BUF_NEXT(mat)) {
+ sctp_log_mb(mat, from);
+ }
+}
+#endif
+
+void
+sctp_log_strm_del(struct sctp_queued_to_read *control, struct sctp_queued_to_read *poschk, int from)
+{
+#if defined(__FreeBSD__) || defined(SCTP_LOCAL_TRACE_BUF)
+ struct sctp_cwnd_log sctp_clog;
+
+ if (control == NULL) {
+ SCTP_PRINTF("Gak log of NULL?\n");
+ return;
+ }
+ sctp_clog.x.strlog.stcb = control->stcb;
+ sctp_clog.x.strlog.n_tsn = control->sinfo_tsn;
+ sctp_clog.x.strlog.n_sseq = (uint16_t)control->mid;
+ sctp_clog.x.strlog.strm = control->sinfo_stream;
+ if (poschk != NULL) {
+ sctp_clog.x.strlog.e_tsn = poschk->sinfo_tsn;
+ sctp_clog.x.strlog.e_sseq = (uint16_t)poschk->mid;
+ } else {
+ sctp_clog.x.strlog.e_tsn = 0;
+ sctp_clog.x.strlog.e_sseq = 0;
+ }
+ SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
+ SCTP_LOG_EVENT_STRM,
+ from,
+ sctp_clog.x.misc.log1,
+ sctp_clog.x.misc.log2,
+ sctp_clog.x.misc.log3,
+ sctp_clog.x.misc.log4);
+#endif
+}
+
+void
+sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *net, int augment, uint8_t from)
+{
+#if defined(__FreeBSD__) || defined(SCTP_LOCAL_TRACE_BUF)
+ struct sctp_cwnd_log sctp_clog;
+
+ sctp_clog.x.cwnd.net = net;
+ if (stcb->asoc.send_queue_cnt > 255)
+ sctp_clog.x.cwnd.cnt_in_send = 255;
+ else
+ sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
+ if (stcb->asoc.stream_queue_cnt > 255)
+ sctp_clog.x.cwnd.cnt_in_str = 255;
+ else
+ sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
+
+ if (net) {
+ sctp_clog.x.cwnd.cwnd_new_value = net->cwnd;
+ sctp_clog.x.cwnd.inflight = net->flight_size;
+ sctp_clog.x.cwnd.pseudo_cumack = net->pseudo_cumack;
+ sctp_clog.x.cwnd.meets_pseudo_cumack = net->new_pseudo_cumack;
+ sctp_clog.x.cwnd.need_new_pseudo_cumack = net->find_pseudo_cumack;
+ }
+ if (SCTP_CWNDLOG_PRESEND == from) {
+ sctp_clog.x.cwnd.meets_pseudo_cumack = stcb->asoc.peers_rwnd;
+ }
+ sctp_clog.x.cwnd.cwnd_augment = augment;
+ SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
+ SCTP_LOG_EVENT_CWND,
+ from,
+ sctp_clog.x.misc.log1,
+ sctp_clog.x.misc.log2,
+ sctp_clog.x.misc.log3,
+ sctp_clog.x.misc.log4);
+#endif
+}
+
+#ifndef __APPLE__
+void
+sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from)
+{
+#if defined(__FreeBSD__) || defined(SCTP_LOCAL_TRACE_BUF)
+ struct sctp_cwnd_log sctp_clog;
+
+ memset(&sctp_clog, 0, sizeof(sctp_clog));
+ if (inp) {
+ sctp_clog.x.lock.sock = (void *) inp->sctp_socket;
+
+ } else {
+ sctp_clog.x.lock.sock = (void *) NULL;
+ }
+ sctp_clog.x.lock.inp = (void *) inp;
+#if (defined(__FreeBSD__) && __FreeBSD_version >= 503000) || (defined(__APPLE__))
+ if (stcb) {
+ sctp_clog.x.lock.tcb_lock = mtx_owned(&stcb->tcb_mtx);
+ } else {
+ sctp_clog.x.lock.tcb_lock = SCTP_LOCK_UNKNOWN;
+ }
+ if (inp) {
+ sctp_clog.x.lock.inp_lock = mtx_owned(&inp->inp_mtx);
+ sctp_clog.x.lock.create_lock = mtx_owned(&inp->inp_create_mtx);
+ } else {
+ sctp_clog.x.lock.inp_lock = SCTP_LOCK_UNKNOWN;
+ sctp_clog.x.lock.create_lock = SCTP_LOCK_UNKNOWN;
+ }
+#if (defined(__FreeBSD__) && __FreeBSD_version <= 602000)
+ sctp_clog.x.lock.info_lock = mtx_owned(&SCTP_BASE_INFO(ipi_ep_mtx));
+#else
+ sctp_clog.x.lock.info_lock = rw_wowned(&SCTP_BASE_INFO(ipi_ep_mtx));
+#endif
+ if (inp && (inp->sctp_socket)) {
+ sctp_clog.x.lock.sock_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
+ sctp_clog.x.lock.sockrcvbuf_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
+ sctp_clog.x.lock.socksndbuf_lock = mtx_owned(&(inp->sctp_socket->so_snd.sb_mtx));
+ } else {
+ sctp_clog.x.lock.sock_lock = SCTP_LOCK_UNKNOWN;
+ sctp_clog.x.lock.sockrcvbuf_lock = SCTP_LOCK_UNKNOWN;
+ sctp_clog.x.lock.socksndbuf_lock = SCTP_LOCK_UNKNOWN;
+ }
+#endif
+ SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
+ SCTP_LOG_LOCK_EVENT,
+ from,
+ sctp_clog.x.misc.log1,
+ sctp_clog.x.misc.log2,
+ sctp_clog.x.misc.log3,
+ sctp_clog.x.misc.log4);
+#endif
+}
+#endif
+
+void
+sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *net, int error, int burst, uint8_t from)
+{
+#if defined(__FreeBSD__) || defined(SCTP_LOCAL_TRACE_BUF)
+ struct sctp_cwnd_log sctp_clog;
+
+ memset(&sctp_clog, 0, sizeof(sctp_clog));
+ sctp_clog.x.cwnd.net = net;
+ sctp_clog.x.cwnd.cwnd_new_value = error;
+ sctp_clog.x.cwnd.inflight = net->flight_size;
+ sctp_clog.x.cwnd.cwnd_augment = burst;
+ if (stcb->asoc.send_queue_cnt > 255)
+ sctp_clog.x.cwnd.cnt_in_send = 255;
+ else
+ sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
+ if (stcb->asoc.stream_queue_cnt > 255)
+ sctp_clog.x.cwnd.cnt_in_str = 255;
+ else
+ sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
+ SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
+ SCTP_LOG_EVENT_MAXBURST,
+ from,
+ sctp_clog.x.misc.log1,
+ sctp_clog.x.misc.log2,
+ sctp_clog.x.misc.log3,
+ sctp_clog.x.misc.log4);
+#endif
+}
+
+void
+sctp_log_rwnd(uint8_t from, uint32_t peers_rwnd, uint32_t snd_size, uint32_t overhead)
+{
+#if defined(__FreeBSD__) || defined(SCTP_LOCAL_TRACE_BUF)
+ struct sctp_cwnd_log sctp_clog;
+
+ sctp_clog.x.rwnd.rwnd = peers_rwnd;
+ sctp_clog.x.rwnd.send_size = snd_size;
+ sctp_clog.x.rwnd.overhead = overhead;
+ sctp_clog.x.rwnd.new_rwnd = 0;
+ SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
+ SCTP_LOG_EVENT_RWND,
+ from,
+ sctp_clog.x.misc.log1,
+ sctp_clog.x.misc.log2,
+ sctp_clog.x.misc.log3,
+ sctp_clog.x.misc.log4);
+#endif
+}
+
+void
+sctp_log_rwnd_set(uint8_t from, uint32_t peers_rwnd, uint32_t flight_size, uint32_t overhead, uint32_t a_rwndval)
+{
+#if defined(__FreeBSD__) || defined(SCTP_LOCAL_TRACE_BUF)
+ struct sctp_cwnd_log sctp_clog;
+
+ sctp_clog.x.rwnd.rwnd = peers_rwnd;
+ sctp_clog.x.rwnd.send_size = flight_size;
+ sctp_clog.x.rwnd.overhead = overhead;
+ sctp_clog.x.rwnd.new_rwnd = a_rwndval;
+ SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
+ SCTP_LOG_EVENT_RWND,
+ from,
+ sctp_clog.x.misc.log1,
+ sctp_clog.x.misc.log2,
+ sctp_clog.x.misc.log3,
+ sctp_clog.x.misc.log4);
+#endif
+}
+
+#ifdef SCTP_MBCNT_LOGGING
+static void
+sctp_log_mbcnt(uint8_t from, uint32_t total_oq, uint32_t book, uint32_t total_mbcnt_q, uint32_t mbcnt)
+{
+#if defined(__FreeBSD__) || defined(SCTP_LOCAL_TRACE_BUF)
+ struct sctp_cwnd_log sctp_clog;
+
+ sctp_clog.x.mbcnt.total_queue_size = total_oq;
+ sctp_clog.x.mbcnt.size_change = book;
+ sctp_clog.x.mbcnt.total_queue_mb_size = total_mbcnt_q;
+ sctp_clog.x.mbcnt.mbcnt_change = mbcnt;
+ SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
+ SCTP_LOG_EVENT_MBCNT,
+ from,
+ sctp_clog.x.misc.log1,
+ sctp_clog.x.misc.log2,
+ sctp_clog.x.misc.log3,
+ sctp_clog.x.misc.log4);
+#endif
+}
+#endif
+
+void
+sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d)
+{
+#if defined(__FreeBSD__) || defined(SCTP_LOCAL_TRACE_BUF)
+ SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
+ SCTP_LOG_MISC_EVENT,
+ from,
+ a, b, c, d);
+#endif
+}
+
+void
+sctp_wakeup_log(struct sctp_tcb *stcb, uint32_t wake_cnt, int from)
+{
+#if defined(__FreeBSD__) || defined(SCTP_LOCAL_TRACE_BUF)
+ struct sctp_cwnd_log sctp_clog;
+
+ sctp_clog.x.wake.stcb = (void *)stcb;
+ sctp_clog.x.wake.wake_cnt = wake_cnt;
+ sctp_clog.x.wake.flight = stcb->asoc.total_flight_count;
+ sctp_clog.x.wake.send_q = stcb->asoc.send_queue_cnt;
+ sctp_clog.x.wake.sent_q = stcb->asoc.sent_queue_cnt;
+
+ if (stcb->asoc.stream_queue_cnt < 0xff)
+ sctp_clog.x.wake.stream_qcnt = (uint8_t) stcb->asoc.stream_queue_cnt;
+ else
+ sctp_clog.x.wake.stream_qcnt = 0xff;
+
+ if (stcb->asoc.chunks_on_out_queue < 0xff)
+ sctp_clog.x.wake.chunks_on_oque = (uint8_t) stcb->asoc.chunks_on_out_queue;
+ else
+ sctp_clog.x.wake.chunks_on_oque = 0xff;
+
+ sctp_clog.x.wake.sctpflags = 0;
+ /* set in the defered mode stuff */
+ if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE)
+ sctp_clog.x.wake.sctpflags |= 1;
+ if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT)
+ sctp_clog.x.wake.sctpflags |= 2;
+ if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT)
+ sctp_clog.x.wake.sctpflags |= 4;
+ /* what about the sb */
+ if (stcb->sctp_socket) {
+ struct socket *so = stcb->sctp_socket;
+
+ sctp_clog.x.wake.sbflags = (uint8_t)((so->so_snd.sb_flags & 0x00ff));
+ } else {
+ sctp_clog.x.wake.sbflags = 0xff;
+ }
+ SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
+ SCTP_LOG_EVENT_WAKE,
+ from,
+ sctp_clog.x.misc.log1,
+ sctp_clog.x.misc.log2,
+ sctp_clog.x.misc.log3,
+ sctp_clog.x.misc.log4);
+#endif
+}
+
+void
+sctp_log_block(uint8_t from, struct sctp_association *asoc, size_t sendlen)
+{
+#if defined(__FreeBSD__) || defined(SCTP_LOCAL_TRACE_BUF)
+ struct sctp_cwnd_log sctp_clog;
+
+ sctp_clog.x.blk.onsb = asoc->total_output_queue_size;
+ sctp_clog.x.blk.send_sent_qcnt = (uint16_t) (asoc->send_queue_cnt + asoc->sent_queue_cnt);
+ sctp_clog.x.blk.peer_rwnd = asoc->peers_rwnd;
+ sctp_clog.x.blk.stream_qcnt = (uint16_t) asoc->stream_queue_cnt;
+ sctp_clog.x.blk.chunks_on_oque = (uint16_t) asoc->chunks_on_out_queue;
+ sctp_clog.x.blk.flight_size = (uint16_t) (asoc->total_flight/1024);
+ sctp_clog.x.blk.sndlen = (uint32_t)sendlen;
+ SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
+ SCTP_LOG_EVENT_BLOCK,
+ from,
+ sctp_clog.x.misc.log1,
+ sctp_clog.x.misc.log2,
+ sctp_clog.x.misc.log3,
+ sctp_clog.x.misc.log4);
+#endif
+}
+
+int
+sctp_fill_stat_log(void *optval SCTP_UNUSED, size_t *optsize SCTP_UNUSED)
+{
+ /* May need to fix this if ktrdump does not work */
+ return (0);
+}
+
+#ifdef SCTP_AUDITING_ENABLED
+uint8_t sctp_audit_data[SCTP_AUDIT_SIZE][2];
+static int sctp_audit_indx = 0;
+
+static
+void
+sctp_print_audit_report(void)
+{
+ int i;
+ int cnt;
+
+ cnt = 0;
+ for (i = sctp_audit_indx; i < SCTP_AUDIT_SIZE; i++) {
+ if ((sctp_audit_data[i][0] == 0xe0) &&
+ (sctp_audit_data[i][1] == 0x01)) {
+ cnt = 0;
+ SCTP_PRINTF("\n");
+ } else if (sctp_audit_data[i][0] == 0xf0) {
+ cnt = 0;
+ SCTP_PRINTF("\n");
+ } else if ((sctp_audit_data[i][0] == 0xc0) &&
+ (sctp_audit_data[i][1] == 0x01)) {
+ SCTP_PRINTF("\n");
+ cnt = 0;
+ }
+ SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0],
+ (uint32_t) sctp_audit_data[i][1]);
+ cnt++;
+ if ((cnt % 14) == 0)
+ SCTP_PRINTF("\n");
+ }
+ for (i = 0; i < sctp_audit_indx; i++) {
+ if ((sctp_audit_data[i][0] == 0xe0) &&
+ (sctp_audit_data[i][1] == 0x01)) {
+ cnt = 0;
+ SCTP_PRINTF("\n");
+ } else if (sctp_audit_data[i][0] == 0xf0) {
+ cnt = 0;
+ SCTP_PRINTF("\n");
+ } else if ((sctp_audit_data[i][0] == 0xc0) &&
+ (sctp_audit_data[i][1] == 0x01)) {
+ SCTP_PRINTF("\n");
+ cnt = 0;
+ }
+ SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0],
+ (uint32_t) sctp_audit_data[i][1]);
+ cnt++;
+ if ((cnt % 14) == 0)
+ SCTP_PRINTF("\n");
+ }
+ SCTP_PRINTF("\n");
+}
+
+void
+sctp_auditing(int from, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
+ struct sctp_nets *net)
+{
+ int resend_cnt, tot_out, rep, tot_book_cnt;
+ struct sctp_nets *lnet;
+ struct sctp_tmit_chunk *chk;
+
+ sctp_audit_data[sctp_audit_indx][0] = 0xAA;
+ sctp_audit_data[sctp_audit_indx][1] = 0x000000ff & from;
+ sctp_audit_indx++;
+ if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
+ sctp_audit_indx = 0;
+ }
+ if (inp == NULL) {
+ sctp_audit_data[sctp_audit_indx][0] = 0xAF;
+ sctp_audit_data[sctp_audit_indx][1] = 0x01;
+ sctp_audit_indx++;
+ if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
+ sctp_audit_indx = 0;
+ }
+ return;
+ }
+ if (stcb == NULL) {
+ sctp_audit_data[sctp_audit_indx][0] = 0xAF;
+ sctp_audit_data[sctp_audit_indx][1] = 0x02;
+ sctp_audit_indx++;
+ if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
+ sctp_audit_indx = 0;
+ }
+ return;
+ }
+ sctp_audit_data[sctp_audit_indx][0] = 0xA1;
+ sctp_audit_data[sctp_audit_indx][1] =
+ (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
+ sctp_audit_indx++;
+ if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
+ sctp_audit_indx = 0;
+ }
+ rep = 0;
+ tot_book_cnt = 0;
+ resend_cnt = tot_out = 0;
+ TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
+ if (chk->sent == SCTP_DATAGRAM_RESEND) {
+ resend_cnt++;
+ } else if (chk->sent < SCTP_DATAGRAM_RESEND) {
+ tot_out += chk->book_size;
+ tot_book_cnt++;
+ }
+ }
+ if (resend_cnt != stcb->asoc.sent_queue_retran_cnt) {
+ sctp_audit_data[sctp_audit_indx][0] = 0xAF;
+ sctp_audit_data[sctp_audit_indx][1] = 0xA1;
+ sctp_audit_indx++;
+ if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
+ sctp_audit_indx = 0;
+ }
+ SCTP_PRINTF("resend_cnt:%d asoc-tot:%d\n",
+ resend_cnt, stcb->asoc.sent_queue_retran_cnt);
+ rep = 1;
+ stcb->asoc.sent_queue_retran_cnt = resend_cnt;
+ sctp_audit_data[sctp_audit_indx][0] = 0xA2;
+ sctp_audit_data[sctp_audit_indx][1] =
+ (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
+ sctp_audit_indx++;
+ if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
+ sctp_audit_indx = 0;
+ }
+ }
+ if (tot_out != stcb->asoc.total_flight) {
+ sctp_audit_data[sctp_audit_indx][0] = 0xAF;
+ sctp_audit_data[sctp_audit_indx][1] = 0xA2;
+ sctp_audit_indx++;
+ if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
+ sctp_audit_indx = 0;
+ }
+ rep = 1;
+ SCTP_PRINTF("tot_flt:%d asoc_tot:%d\n", tot_out,
+ (int)stcb->asoc.total_flight);
+ stcb->asoc.total_flight = tot_out;
+ }
+ if (tot_book_cnt != stcb->asoc.total_flight_count) {
+ sctp_audit_data[sctp_audit_indx][0] = 0xAF;
+ sctp_audit_data[sctp_audit_indx][1] = 0xA5;
+ sctp_audit_indx++;
+ if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
+ sctp_audit_indx = 0;
+ }
+ rep = 1;
+ SCTP_PRINTF("tot_flt_book:%d\n", tot_book_cnt);
+
+ stcb->asoc.total_flight_count = tot_book_cnt;
+ }
+ tot_out = 0;
+ TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
+ tot_out += lnet->flight_size;
+ }
+ if (tot_out != stcb->asoc.total_flight) {
+ sctp_audit_data[sctp_audit_indx][0] = 0xAF;
+ sctp_audit_data[sctp_audit_indx][1] = 0xA3;
+ sctp_audit_indx++;
+ if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
+ sctp_audit_indx = 0;
+ }
+ rep = 1;
+ SCTP_PRINTF("real flight:%d net total was %d\n",
+ stcb->asoc.total_flight, tot_out);
+ /* now corrective action */
+ TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
+
+ tot_out = 0;
+ TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
+ if ((chk->whoTo == lnet) &&
+ (chk->sent < SCTP_DATAGRAM_RESEND)) {
+ tot_out += chk->book_size;
+ }
+ }
+ if (lnet->flight_size != tot_out) {
+ SCTP_PRINTF("net:%p flight was %d corrected to %d\n",
+ (void *)lnet, lnet->flight_size,
+ tot_out);
+ lnet->flight_size = tot_out;
+ }
+ }
+ }
+ if (rep) {
+ sctp_print_audit_report();
+ }
+}
+
+void
+sctp_audit_log(uint8_t ev, uint8_t fd)
+{
+
+ sctp_audit_data[sctp_audit_indx][0] = ev;
+ sctp_audit_data[sctp_audit_indx][1] = fd;
+ sctp_audit_indx++;
+ if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
+ sctp_audit_indx = 0;
+ }
+}
+
+#endif
+
+/*
+ * sctp_stop_timers_for_shutdown() should be called
+ * when entering the SHUTDOWN_SENT or SHUTDOWN_ACK_SENT
+ * state to make sure that all timers are stopped.
+ */
+void
+sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb)
+{
+ struct sctp_association *asoc;
+ struct sctp_nets *net;
+
+ asoc = &stcb->asoc;
+
+ (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
+ (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
+ (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
+ (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
+ (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
+ TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
+ (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
+ (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
+ }
+}
+
+/*
+ * a list of sizes based on typical mtu's, used only if next hop size not
+ * returned.
+ */
+static uint32_t sctp_mtu_sizes[] = {
+ 68,
+ 296,
+ 508,
+ 512,
+ 544,
+ 576,
+ 1006,
+ 1492,
+ 1500,
+ 1536,
+ 2002,
+ 2048,
+ 4352,
+ 4464,
+ 8166,
+ 17914,
+ 32000,
+ 65535
+};
+
+/*
+ * Return the largest MTU smaller than val. If there is no
+ * entry, just return val.
+ */
+uint32_t
+sctp_get_prev_mtu(uint32_t val)
+{
+ uint32_t i;
+
+ if (val <= sctp_mtu_sizes[0]) {
+ return (val);
+ }
+ for (i = 1; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
+ if (val <= sctp_mtu_sizes[i]) {
+ break;
+ }
+ }
+ return (sctp_mtu_sizes[i - 1]);
+}
+
+/*
+ * Return the smallest MTU larger than val. If there is no
+ * entry, just return val.
+ */
+uint32_t
+sctp_get_next_mtu(uint32_t val)
+{
+ /* select another MTU that is just bigger than this one */
+ uint32_t i;
+
+ for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
+ if (val < sctp_mtu_sizes[i]) {
+ return (sctp_mtu_sizes[i]);
+ }
+ }
+ return (val);
+}
+
+void
+sctp_fill_random_store(struct sctp_pcb *m)
+{
+ /*
+ * Here we use the MD5/SHA-1 to hash with our good randomNumbers and
+ * our counter. The result becomes our good random numbers and we
+ * then setup to give these out. Note that we do no locking to
+ * protect this. This is ok, since if competing folks call this we
+ * will get more gobbled gook in the random store which is what we
+ * want. There is a danger that two guys will use the same random
+ * numbers, but thats ok too since that is random as well :->
+ */
+ m->store_at = 0;
+ (void)sctp_hmac(SCTP_HMAC, (uint8_t *)m->random_numbers,
+ sizeof(m->random_numbers), (uint8_t *)&m->random_counter,
+ sizeof(m->random_counter), (uint8_t *)m->random_store);
+ m->random_counter++;
+}
+
+uint32_t
+sctp_select_initial_TSN(struct sctp_pcb *inp)
+{
+ /*
+ * A true implementation should use random selection process to get
+ * the initial stream sequence number, using RFC1750 as a good
+ * guideline
+ */
+ uint32_t x, *xp;
+ uint8_t *p;
+ int store_at, new_store;
+
+ if (inp->initial_sequence_debug != 0) {
+ uint32_t ret;
+
+ ret = inp->initial_sequence_debug;
+ inp->initial_sequence_debug++;
+ return (ret);
+ }
+ retry:
+ store_at = inp->store_at;
+ new_store = store_at + sizeof(uint32_t);
+ if (new_store >= (SCTP_SIGNATURE_SIZE-3)) {
+ new_store = 0;
+ }
+ if (!atomic_cmpset_int(&inp->store_at, store_at, new_store)) {
+ goto retry;
+ }
+ if (new_store == 0) {
+ /* Refill the random store */
+ sctp_fill_random_store(inp);
+ }
+ p = &inp->random_store[store_at];
+ xp = (uint32_t *)p;
+ x = *xp;
+ return (x);
+}
+
+uint32_t
+sctp_select_a_tag(struct sctp_inpcb *inp, uint16_t lport, uint16_t rport, int check)
+{
+ uint32_t x;
+ struct timeval now;
+
+ if (check) {
+ (void)SCTP_GETTIME_TIMEVAL(&now);
+ }
+ for (;;) {
+ x = sctp_select_initial_TSN(&inp->sctp_ep);
+ if (x == 0) {
+ /* we never use 0 */
+ continue;
+ }
+ if (!check || sctp_is_vtag_good(x, lport, rport, &now)) {
+ break;
+ }
+ }
+ return (x);
+}
+
+int32_t
+sctp_map_assoc_state(int kernel_state)
+{
+ int32_t user_state;
+
+ if (kernel_state & SCTP_STATE_WAS_ABORTED) {
+ user_state = SCTP_CLOSED;
+ } else if (kernel_state & SCTP_STATE_SHUTDOWN_PENDING) {
+ user_state = SCTP_SHUTDOWN_PENDING;
+ } else {
+ switch (kernel_state & SCTP_STATE_MASK) {
+ case SCTP_STATE_EMPTY:
+ user_state = SCTP_CLOSED;
+ break;
+ case SCTP_STATE_INUSE:
+ user_state = SCTP_CLOSED;
+ break;
+ case SCTP_STATE_COOKIE_WAIT:
+ user_state = SCTP_COOKIE_WAIT;
+ break;
+ case SCTP_STATE_COOKIE_ECHOED:
+ user_state = SCTP_COOKIE_ECHOED;
+ break;
+ case SCTP_STATE_OPEN:
+ user_state = SCTP_ESTABLISHED;
+ break;
+ case SCTP_STATE_SHUTDOWN_SENT:
+ user_state = SCTP_SHUTDOWN_SENT;
+ break;
+ case SCTP_STATE_SHUTDOWN_RECEIVED:
+ user_state = SCTP_SHUTDOWN_RECEIVED;
+ break;
+ case SCTP_STATE_SHUTDOWN_ACK_SENT:
+ user_state = SCTP_SHUTDOWN_ACK_SENT;
+ break;
+ default:
+ user_state = SCTP_CLOSED;
+ break;
+ }
+ }
+ return (user_state);
+}
+
+int
+sctp_init_asoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
+ uint32_t override_tag, uint32_t vrf_id, uint16_t o_strms)
+{
+ struct sctp_association *asoc;
+ /*
+ * Anything set to zero is taken care of by the allocation routine's
+ * bzero
+ */
+
+ /*
+ * Up front select what scoping to apply on addresses I tell my peer
+ * Not sure what to do with these right now, we will need to come up
+ * with a way to set them. We may need to pass them through from the
+ * caller in the sctp_aloc_assoc() function.
+ */
+ int i;
+#if defined(SCTP_DETAILED_STR_STATS)
+ int j;
+#endif
+
+ asoc = &stcb->asoc;
+ /* init all variables to a known value. */
+ SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_INUSE);
+ asoc->max_burst = inp->sctp_ep.max_burst;
+ asoc->fr_max_burst = inp->sctp_ep.fr_max_burst;
+ asoc->heart_beat_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
+ asoc->cookie_life = inp->sctp_ep.def_cookie_life;
+ asoc->sctp_cmt_on_off = inp->sctp_cmt_on_off;
+ asoc->ecn_supported = inp->ecn_supported;
+ asoc->prsctp_supported = inp->prsctp_supported;
+ asoc->idata_supported = inp->idata_supported;
+ asoc->auth_supported = inp->auth_supported;
+ asoc->asconf_supported = inp->asconf_supported;
+ asoc->reconfig_supported = inp->reconfig_supported;
+ asoc->nrsack_supported = inp->nrsack_supported;
+ asoc->pktdrop_supported = inp->pktdrop_supported;
+ asoc->idata_supported = inp->idata_supported;
+ asoc->sctp_cmt_pf = (uint8_t)0;
+ asoc->sctp_frag_point = inp->sctp_frag_point;
+ asoc->sctp_features = inp->sctp_features;
+ asoc->default_dscp = inp->sctp_ep.default_dscp;
+ asoc->max_cwnd = inp->max_cwnd;
+#ifdef INET6
+ if (inp->sctp_ep.default_flowlabel) {
+ asoc->default_flowlabel = inp->sctp_ep.default_flowlabel;
+ } else {
+ if (inp->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) {
+ asoc->default_flowlabel = sctp_select_initial_TSN(&inp->sctp_ep);
+ asoc->default_flowlabel &= 0x000fffff;
+ asoc->default_flowlabel |= 0x80000000;
+ } else {
+ asoc->default_flowlabel = 0;
+ }
+ }
+#endif
+ asoc->sb_send_resv = 0;
+ if (override_tag) {
+ asoc->my_vtag = override_tag;
+ } else {
+ asoc->my_vtag = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 1);
+ }
+ /* Get the nonce tags */
+ asoc->my_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
+ asoc->peer_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
+ asoc->vrf_id = vrf_id;
+
+#ifdef SCTP_ASOCLOG_OF_TSNS
+ asoc->tsn_in_at = 0;
+ asoc->tsn_out_at = 0;
+ asoc->tsn_in_wrapped = 0;
+ asoc->tsn_out_wrapped = 0;
+ asoc->cumack_log_at = 0;
+ asoc->cumack_log_atsnt = 0;
+#endif
+#ifdef SCTP_FS_SPEC_LOG
+ asoc->fs_index = 0;
+#endif
+ asoc->refcnt = 0;
+ asoc->assoc_up_sent = 0;
+ asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq =
+ sctp_select_initial_TSN(&inp->sctp_ep);
+ asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1;
+ /* we are optimisitic here */
+ asoc->peer_supports_nat = 0;
+ asoc->sent_queue_retran_cnt = 0;
+
+ /* for CMT */
+ asoc->last_net_cmt_send_started = NULL;
+
+ /* This will need to be adjusted */
+ asoc->last_acked_seq = asoc->init_seq_number - 1;
+ asoc->advanced_peer_ack_point = asoc->last_acked_seq;
+ asoc->asconf_seq_in = asoc->last_acked_seq;
+
+ /* here we are different, we hold the next one we expect */
+ asoc->str_reset_seq_in = asoc->last_acked_seq + 1;
+
+ asoc->initial_init_rto_max = inp->sctp_ep.initial_init_rto_max;
+ asoc->initial_rto = inp->sctp_ep.initial_rto;
+
+ asoc->max_init_times = inp->sctp_ep.max_init_times;
+ asoc->max_send_times = inp->sctp_ep.max_send_times;
+ asoc->def_net_failure = inp->sctp_ep.def_net_failure;
+ asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold;
+ asoc->free_chunk_cnt = 0;
+
+ asoc->iam_blocking = 0;
+ asoc->context = inp->sctp_context;
+ asoc->local_strreset_support = inp->local_strreset_support;
+ asoc->def_send = inp->def_send;
+ asoc->delayed_ack = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
+ asoc->sack_freq = inp->sctp_ep.sctp_sack_freq;
+ asoc->pr_sctp_cnt = 0;
+ asoc->total_output_queue_size = 0;
+
+ if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
+ asoc->scope.ipv6_addr_legal = 1;
+ if (SCTP_IPV6_V6ONLY(inp) == 0) {
+ asoc->scope.ipv4_addr_legal = 1;
+ } else {
+ asoc->scope.ipv4_addr_legal = 0;
+ }
+#if defined(__Userspace__)
+ asoc->scope.conn_addr_legal = 0;
+#endif
+ } else {
+ asoc->scope.ipv6_addr_legal = 0;
+#if defined(__Userspace__)
+ if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_CONN) {
+ asoc->scope.conn_addr_legal = 1;
+ asoc->scope.ipv4_addr_legal = 0;
+ } else {
+ asoc->scope.conn_addr_legal = 0;
+ asoc->scope.ipv4_addr_legal = 1;
+ }
+#else
+ asoc->scope.ipv4_addr_legal = 1;
+#endif
+ }
+
+ asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND);
+ asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket);
+
+ asoc->smallest_mtu = inp->sctp_frag_point;
+ asoc->minrto = inp->sctp_ep.sctp_minrto;
+ asoc->maxrto = inp->sctp_ep.sctp_maxrto;
+
+ asoc->stream_locked_on = 0;
+ asoc->ecn_echo_cnt_onq = 0;
+ asoc->stream_locked = 0;
+
+ asoc->send_sack = 1;
+
+ LIST_INIT(&asoc->sctp_restricted_addrs);
+
+ TAILQ_INIT(&asoc->nets);
+ TAILQ_INIT(&asoc->pending_reply_queue);
+ TAILQ_INIT(&asoc->asconf_ack_sent);
+ /* Setup to fill the hb random cache at first HB */
+ asoc->hb_random_idx = 4;
+
+ asoc->sctp_autoclose_ticks = inp->sctp_ep.auto_close_time;
+
+ stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module;
+ stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module];
+
+ stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module;
+ stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module];
+
+ /*
+ * Now the stream parameters, here we allocate space for all streams
+ * that we request by default.
+ */
+ asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams =
+ o_strms;
+ SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *,
+ asoc->streamoutcnt * sizeof(struct sctp_stream_out),
+ SCTP_M_STRMO);
+ if (asoc->strmout == NULL) {
+ /* big trouble no memory */
+ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
+ return (ENOMEM);
+ }
+ for (i = 0; i < asoc->streamoutcnt; i++) {
+ /*
+ * inbound side must be set to 0xffff, also NOTE when we get
+ * the INIT-ACK back (for INIT sender) we MUST reduce the
+ * count (streamoutcnt) but first check if we sent to any of
+ * the upper streams that were dropped (if some were). Those
+ * that were dropped must be notified to the upper layer as
+ * failed to send.
+ */
+ asoc->strmout[i].next_mid_ordered = 0;
+ asoc->strmout[i].next_mid_unordered = 0;
+ TAILQ_INIT(&asoc->strmout[i].outqueue);
+ asoc->strmout[i].chunks_on_queues = 0;
+#if defined(SCTP_DETAILED_STR_STATS)
+ for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) {
+ asoc->strmout[i].abandoned_sent[j] = 0;
+ asoc->strmout[i].abandoned_unsent[j] = 0;
+ }
+#else
+ asoc->strmout[i].abandoned_sent[0] = 0;
+ asoc->strmout[i].abandoned_unsent[0] = 0;
+#endif
+ asoc->strmout[i].sid = i;
+ asoc->strmout[i].last_msg_incomplete = 0;
+ asoc->strmout[i].state = SCTP_STREAM_OPENING;
+ asoc->ss_functions.sctp_ss_init_stream(stcb, &asoc->strmout[i], NULL);
+ }
+ asoc->ss_functions.sctp_ss_init(stcb, asoc, 0);
+
+ /* Now the mapping array */
+ asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
+ SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
+ SCTP_M_MAP);
+ if (asoc->mapping_array == NULL) {
+ SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
+ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
+ return (ENOMEM);
+ }
+ memset(asoc->mapping_array, 0, asoc->mapping_array_size);
+ SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
+ SCTP_M_MAP);
+ if (asoc->nr_mapping_array == NULL) {
+ SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
+ SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
+ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
+ return (ENOMEM);
+ }
+ memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
+
+ /* Now the init of the other outqueues */
+ TAILQ_INIT(&asoc->free_chunks);
+ TAILQ_INIT(&asoc->control_send_queue);
+ TAILQ_INIT(&asoc->asconf_send_queue);
+ TAILQ_INIT(&asoc->send_queue);
+ TAILQ_INIT(&asoc->sent_queue);
+ TAILQ_INIT(&asoc->resetHead);
+ asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome;
+ TAILQ_INIT(&asoc->asconf_queue);
+ /* authentication fields */
+ asoc->authinfo.random = NULL;
+ asoc->authinfo.active_keyid = 0;
+ asoc->authinfo.assoc_key = NULL;
+ asoc->authinfo.assoc_keyid = 0;
+ asoc->authinfo.recv_key = NULL;
+ asoc->authinfo.recv_keyid = 0;
+ LIST_INIT(&asoc->shared_keys);
+ asoc->marked_retrans = 0;
+ asoc->port = inp->sctp_ep.port;
+ asoc->timoinit = 0;
+ asoc->timodata = 0;
+ asoc->timosack = 0;
+ asoc->timoshutdown = 0;
+ asoc->timoheartbeat = 0;
+ asoc->timocookie = 0;
+ asoc->timoshutdownack = 0;
+ (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
+ asoc->discontinuity_time = asoc->start_time;
+ for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) {
+ asoc->abandoned_unsent[i] = 0;
+ asoc->abandoned_sent[i] = 0;
+ }
+ /* sa_ignore MEMLEAK {memory is put in the assoc mapping array and freed later when
+ * the association is freed.
+ */
+ return (0);
+}
+
+void
+sctp_print_mapping_array(struct sctp_association *asoc)
+{
+ unsigned int i, limit;
+
+ SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
+ asoc->mapping_array_size,
+ asoc->mapping_array_base_tsn,
+ asoc->cumulative_tsn,
+ asoc->highest_tsn_inside_map,
+ asoc->highest_tsn_inside_nr_map);
+ for (limit = asoc->mapping_array_size; limit > 1; limit--) {
+ if (asoc->mapping_array[limit - 1] != 0) {
+ break;
+ }
+ }
+ SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
+ for (i = 0; i < limit; i++) {
+ SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
+ }
+ if (limit % 16)
+ SCTP_PRINTF("\n");
+ for (limit = asoc->mapping_array_size; limit > 1; limit--) {
+ if (asoc->nr_mapping_array[limit - 1]) {
+ break;
+ }
+ }
+ SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
+ for (i = 0; i < limit; i++) {
+ SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ': '\n');
+ }
+ if (limit % 16)
+ SCTP_PRINTF("\n");
+}
+
+int
+sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
+{
+ /* mapping array needs to grow */
+ uint8_t *new_array1, *new_array2;
+ uint32_t new_size;
+
+ new_size = asoc->mapping_array_size + ((needed+7)/8 + SCTP_MAPPING_ARRAY_INCR);
+ SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
+ SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
+ if ((new_array1 == NULL) || (new_array2 == NULL)) {
+ /* can't get more, forget it */
+ SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
+ if (new_array1) {
+ SCTP_FREE(new_array1, SCTP_M_MAP);
+ }
+ if (new_array2) {
+ SCTP_FREE(new_array2, SCTP_M_MAP);
+ }
+ return (-1);
+ }
+ memset(new_array1, 0, new_size);
+ memset(new_array2, 0, new_size);
+ memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
+ memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
+ SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
+ SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
+ asoc->mapping_array = new_array1;
+ asoc->nr_mapping_array = new_array2;
+ asoc->mapping_array_size = new_size;
+ return (0);
+}
+
+
+static void
+sctp_iterator_work(struct sctp_iterator *it)
+{
+ int iteration_count = 0;
+ int inp_skip = 0;
+ int first_in = 1;
+ struct sctp_inpcb *tinp;
+
+ SCTP_INP_INFO_RLOCK();
+ SCTP_ITERATOR_LOCK();
+ sctp_it_ctl.cur_it = it;
+ if (it->inp) {
+ SCTP_INP_RLOCK(it->inp);
+ SCTP_INP_DECR_REF(it->inp);
+ }
+ if (it->inp == NULL) {
+ /* iterator is complete */
+done_with_iterator:
+ sctp_it_ctl.cur_it = NULL;
+ SCTP_ITERATOR_UNLOCK();
+ SCTP_INP_INFO_RUNLOCK();
+ if (it->function_atend != NULL) {
+ (*it->function_atend) (it->pointer, it->val);
+ }
+ SCTP_FREE(it, SCTP_M_ITER);
+ return;
+ }
+select_a_new_ep:
+ if (first_in) {
+ first_in = 0;
+ } else {
+ SCTP_INP_RLOCK(it->inp);
+ }
+ while (((it->pcb_flags) &&
+ ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
+ ((it->pcb_features) &&
+ ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
+ /* endpoint flags or features don't match, so keep looking */
+ if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
+ SCTP_INP_RUNLOCK(it->inp);
+ goto done_with_iterator;
+ }
+ tinp = it->inp;
+ it->inp = LIST_NEXT(it->inp, sctp_list);
+ SCTP_INP_RUNLOCK(tinp);
+ if (it->inp == NULL) {
+ goto done_with_iterator;
+ }
+ SCTP_INP_RLOCK(it->inp);
+ }
+ /* now go through each assoc which is in the desired state */
+ if (it->done_current_ep == 0) {
+ if (it->function_inp != NULL)
+ inp_skip = (*it->function_inp)(it->inp, it->pointer, it->val);
+ it->done_current_ep = 1;
+ }
+ if (it->stcb == NULL) {
+ /* run the per instance function */
+ it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
+ }
+ if ((inp_skip) || it->stcb == NULL) {
+ if (it->function_inp_end != NULL) {
+ inp_skip = (*it->function_inp_end)(it->inp,
+ it->pointer,
+ it->val);
+ }
+ SCTP_INP_RUNLOCK(it->inp);
+ goto no_stcb;
+ }
+ while (it->stcb) {
+ SCTP_TCB_LOCK(it->stcb);
+ if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
+ /* not in the right state... keep looking */
+ SCTP_TCB_UNLOCK(it->stcb);
+ goto next_assoc;
+ }
+ /* see if we have limited out the iterator loop */
+ iteration_count++;
+ if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
+ /* Pause to let others grab the lock */
+ atomic_add_int(&it->stcb->asoc.refcnt, 1);
+ SCTP_TCB_UNLOCK(it->stcb);
+ SCTP_INP_INCR_REF(it->inp);
+ SCTP_INP_RUNLOCK(it->inp);
+ SCTP_ITERATOR_UNLOCK();
+ SCTP_INP_INFO_RUNLOCK();
+ SCTP_INP_INFO_RLOCK();
+ SCTP_ITERATOR_LOCK();
+ if (sctp_it_ctl.iterator_flags) {
+ /* We won't be staying here */
+ SCTP_INP_DECR_REF(it->inp);
+ atomic_add_int(&it->stcb->asoc.refcnt, -1);
+#if !defined(__FreeBSD__)
+ if (sctp_it_ctl.iterator_flags &
+ SCTP_ITERATOR_MUST_EXIT) {
+ goto done_with_iterator;
+ }
+#endif
+ if (sctp_it_ctl.iterator_flags &
+ SCTP_ITERATOR_STOP_CUR_IT) {
+ sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
+ goto done_with_iterator;
+ }
+ if (sctp_it_ctl.iterator_flags &
+ SCTP_ITERATOR_STOP_CUR_INP) {
+ sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
+ goto no_stcb;
+ }
+ /* If we reach here huh? */
+ SCTP_PRINTF("Unknown it ctl flag %x\n",
+ sctp_it_ctl.iterator_flags);
+ sctp_it_ctl.iterator_flags = 0;
+ }
+ SCTP_INP_RLOCK(it->inp);
+ SCTP_INP_DECR_REF(it->inp);
+ SCTP_TCB_LOCK(it->stcb);
+ atomic_add_int(&it->stcb->asoc.refcnt, -1);
+ iteration_count = 0;
+ }
+
+ /* run function on this one */
+ (*it->function_assoc)(it->inp, it->stcb, it->pointer, it->val);
+
+ /*
+ * we lie here, it really needs to have its own type but
+ * first I must verify that this won't effect things :-0
+ */
+ if (it->no_chunk_output == 0)
+ sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
+
+ SCTP_TCB_UNLOCK(it->stcb);
+ next_assoc:
+ it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
+ if (it->stcb == NULL) {
+ /* Run last function */
+ if (it->function_inp_end != NULL) {
+ inp_skip = (*it->function_inp_end)(it->inp,
+ it->pointer,
+ it->val);
+ }
+ }
+ }
+ SCTP_INP_RUNLOCK(it->inp);
+ no_stcb:
+ /* done with all assocs on this endpoint, move on to next endpoint */
+ it->done_current_ep = 0;
+ if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
+ it->inp = NULL;
+ } else {
+ it->inp = LIST_NEXT(it->inp, sctp_list);
+ }
+ if (it->inp == NULL) {
+ goto done_with_iterator;
+ }
+ goto select_a_new_ep;
+}
+
+void
+sctp_iterator_worker(void)
+{
+ struct sctp_iterator *it, *nit;
+
+ /* This function is called with the WQ lock in place */
+
+ sctp_it_ctl.iterator_running = 1;
+ TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
+ /* now lets work on this one */
+ TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
+ SCTP_IPI_ITERATOR_WQ_UNLOCK();
+#if defined(__FreeBSD__) && __FreeBSD_version >= 801000
+ CURVNET_SET(it->vn);
+#endif
+ sctp_iterator_work(it);
+#if defined(__FreeBSD__) && __FreeBSD_version >= 801000
+ CURVNET_RESTORE();
+#endif
+ SCTP_IPI_ITERATOR_WQ_LOCK();
+#if !defined(__FreeBSD__)
+ if (sctp_it_ctl.iterator_flags & SCTP_ITERATOR_MUST_EXIT) {
+ break;
+ }
+#endif
+ /*sa_ignore FREED_MEMORY*/
+ }
+ sctp_it_ctl.iterator_running = 0;
+ return;
+}
+
+
+static void
+sctp_handle_addr_wq(void)
+{
+ /* deal with the ADDR wq from the rtsock calls */
+ struct sctp_laddr *wi, *nwi;
+ struct sctp_asconf_iterator *asc;
+
+ SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
+ sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
+ if (asc == NULL) {
+ /* Try later, no memory */
+ sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
+ (struct sctp_inpcb *)NULL,
+ (struct sctp_tcb *)NULL,
+ (struct sctp_nets *)NULL);
+ return;
+ }
+ LIST_INIT(&asc->list_of_work);
+ asc->cnt = 0;
+
+ SCTP_WQ_ADDR_LOCK();
+ LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
+ LIST_REMOVE(wi, sctp_nxt_addr);
+ LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
+ asc->cnt++;
+ }
+ SCTP_WQ_ADDR_UNLOCK();
+
+ if (asc->cnt == 0) {
+ SCTP_FREE(asc, SCTP_M_ASC_IT);
+ } else {
+ int ret;
+
+ ret = sctp_initiate_iterator(sctp_asconf_iterator_ep,
+ sctp_asconf_iterator_stcb,
+ NULL, /* No ep end for boundall */
+ SCTP_PCB_FLAGS_BOUNDALL,
+ SCTP_PCB_ANY_FEATURES,
+ SCTP_ASOC_ANY_STATE,
+ (void *)asc, 0,
+ sctp_asconf_iterator_end, NULL, 0);
+ if (ret) {
+ SCTP_PRINTF("Failed to initiate iterator for handle_addr_wq\n");
+ /* Freeing if we are stopping or put back on the addr_wq. */
+ if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
+ sctp_asconf_iterator_end(asc, 0);
+ } else {
+ SCTP_WQ_ADDR_LOCK();
+ LIST_FOREACH(wi, &asc->list_of_work, sctp_nxt_addr) {
+ LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
+ }
+ SCTP_WQ_ADDR_UNLOCK();
+ SCTP_FREE(asc, SCTP_M_ASC_IT);
+ }
+ }
+ }
+}
+
+void
+sctp_timeout_handler(void *t)
+{
+ struct sctp_inpcb *inp;
+ struct sctp_tcb *stcb;
+ struct sctp_nets *net;
+ struct sctp_timer *tmr;
+ struct mbuf *op_err;
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ struct socket *so;
+#endif
+ int did_output;
+ int type;
+
+ tmr = (struct sctp_timer *)t;
+ inp = (struct sctp_inpcb *)tmr->ep;
+ stcb = (struct sctp_tcb *)tmr->tcb;
+ net = (struct sctp_nets *)tmr->net;
+#if defined(__FreeBSD__) && __FreeBSD_version >= 801000
+ CURVNET_SET((struct vnet *)tmr->vnet);
+#endif
+ did_output = 1;
+
+#ifdef SCTP_AUDITING_ENABLED
+ sctp_audit_log(0xF0, (uint8_t) tmr->type);
+ sctp_auditing(3, inp, stcb, net);
+#endif
+
+ /* sanity checks... */
+ if (tmr->self != (void *)tmr) {
+ /*
+ * SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n",
+ * (void *)tmr);
+ */
+#if defined(__FreeBSD__) && __FreeBSD_version >= 801000
+ CURVNET_RESTORE();
+#endif
+ return;
+ }
+ tmr->stopped_from = 0xa001;
+ if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) {
+ /*
+ * SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n",
+ * tmr->type);
+ */
+#if defined(__FreeBSD__) && __FreeBSD_version >= 801000
+ CURVNET_RESTORE();
+#endif
+ return;
+ }
+ tmr->stopped_from = 0xa002;
+ if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) {
+#if defined(__FreeBSD__) && __FreeBSD_version >= 801000
+ CURVNET_RESTORE();
+#endif
+ return;
+ }
+ /* if this is an iterator timeout, get the struct and clear inp */
+ tmr->stopped_from = 0xa003;
+ if (inp) {
+ SCTP_INP_INCR_REF(inp);
+ if ((inp->sctp_socket == NULL) &&
+ ((tmr->type != SCTP_TIMER_TYPE_INPKILL) &&
+ (tmr->type != SCTP_TIMER_TYPE_INIT) &&
+ (tmr->type != SCTP_TIMER_TYPE_SEND) &&
+ (tmr->type != SCTP_TIMER_TYPE_RECV) &&
+ (tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) &&
+ (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) &&
+ (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) &&
+ (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) &&
+ (tmr->type != SCTP_TIMER_TYPE_ASOCKILL))
+ ) {
+ SCTP_INP_DECR_REF(inp);
+#if defined(__FreeBSD__) && __FreeBSD_version >= 801000
+ CURVNET_RESTORE();
+#endif
+ return;
+ }
+ }
+ tmr->stopped_from = 0xa004;
+ if (stcb) {
+ atomic_add_int(&stcb->asoc.refcnt, 1);
+ if (stcb->asoc.state == 0) {
+ atomic_add_int(&stcb->asoc.refcnt, -1);
+ if (inp) {
+ SCTP_INP_DECR_REF(inp);
+ }
+#if defined(__FreeBSD__) && __FreeBSD_version >= 801000
+ CURVNET_RESTORE();
+#endif
+ return;
+ }
+ }
+ type = tmr->type;
+ tmr->stopped_from = 0xa005;
+ SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", type);
+ if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
+ if (inp) {
+ SCTP_INP_DECR_REF(inp);
+ }
+ if (stcb) {
+ atomic_add_int(&stcb->asoc.refcnt, -1);
+ }
+#if defined(__FreeBSD__) && __FreeBSD_version >= 801000
+ CURVNET_RESTORE();
+#endif
+ return;
+ }
+ tmr->stopped_from = 0xa006;
+
+ if (stcb) {
+ SCTP_TCB_LOCK(stcb);
+ atomic_add_int(&stcb->asoc.refcnt, -1);
+ if ((type != SCTP_TIMER_TYPE_ASOCKILL) &&
+ ((stcb->asoc.state == 0) ||
+ (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
+ SCTP_TCB_UNLOCK(stcb);
+ if (inp) {
+ SCTP_INP_DECR_REF(inp);
+ }
+#if defined(__FreeBSD__) && __FreeBSD_version >= 801000
+ CURVNET_RESTORE();
+#endif
+ return;
+ }
+ }
+ /* record in stopped what t-o occurred */
+ tmr->stopped_from = type;
+
+ /* mark as being serviced now */
+ if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
+ /*
+ * Callout has been rescheduled.
+ */
+ goto get_out;
+ }
+ if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
+ /*
+ * Not active, so no action.
+ */
+ goto get_out;
+ }
+ SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
+
+ /* call the handler for the appropriate timer type */
+ switch (type) {
+ case SCTP_TIMER_TYPE_ZERO_COPY:
+ if (inp == NULL) {
+ break;
+ }
+ if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
+ SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
+ }
+ break;
+ case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
+ if (inp == NULL) {
+ break;
+ }
+ if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
+ SCTP_ZERO_COPY_SENDQ_EVENT(inp, inp->sctp_socket);
+ }
+ break;
+ case SCTP_TIMER_TYPE_ADDR_WQ:
+ sctp_handle_addr_wq();
+ break;
+ case SCTP_TIMER_TYPE_SEND:
+ if ((stcb == NULL) || (inp == NULL)) {
+ break;
+ }
+ SCTP_STAT_INCR(sctps_timodata);
+ stcb->asoc.timodata++;
+ stcb->asoc.num_send_timers_up--;
+ if (stcb->asoc.num_send_timers_up < 0) {
+ stcb->asoc.num_send_timers_up = 0;
+ }
+ SCTP_TCB_LOCK_ASSERT(stcb);
+ if (sctp_t3rxt_timer(inp, stcb, net)) {
+ /* no need to unlock on tcb its gone */
+
+ goto out_decr;
+ }
+ SCTP_TCB_LOCK_ASSERT(stcb);
+#ifdef SCTP_AUDITING_ENABLED
+ sctp_auditing(4, inp, stcb, net);
+#endif
+ sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
+ if ((stcb->asoc.num_send_timers_up == 0) &&
+ (stcb->asoc.sent_queue_cnt > 0)) {
+ struct sctp_tmit_chunk *chk;
+
+ /*
+ * safeguard. If there on some on the sent queue
+ * somewhere but no timers running something is
+ * wrong... so we start a timer on the first chunk
+ * on the send queue on whatever net it is sent to.
+ */
+ chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
+ sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb,
+ chk->whoTo);
+ }
+ break;
+ case SCTP_TIMER_TYPE_INIT:
+ if ((stcb == NULL) || (inp == NULL)) {
+ break;
+ }
+ SCTP_STAT_INCR(sctps_timoinit);
+ stcb->asoc.timoinit++;
+ if (sctp_t1init_timer(inp, stcb, net)) {
+ /* no need to unlock on tcb its gone */
+ goto out_decr;
+ }
+ /* We do output but not here */
+ did_output = 0;
+ break;
+ case SCTP_TIMER_TYPE_RECV:
+ if ((stcb == NULL) || (inp == NULL)) {
+ break;
+ }
+ SCTP_STAT_INCR(sctps_timosack);
+ stcb->asoc.timosack++;
+ sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
+#ifdef SCTP_AUDITING_ENABLED
+ sctp_auditing(4, inp, stcb, net);
+#endif
+ sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
+ break;
+ case SCTP_TIMER_TYPE_SHUTDOWN:
+ if ((stcb == NULL) || (inp == NULL)) {
+ break;
+ }
+ if (sctp_shutdown_timer(inp, stcb, net)) {
+ /* no need to unlock on tcb its gone */
+ goto out_decr;
+ }
+ SCTP_STAT_INCR(sctps_timoshutdown);
+ stcb->asoc.timoshutdown++;
+#ifdef SCTP_AUDITING_ENABLED
+ sctp_auditing(4, inp, stcb, net);
+#endif
+ sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
+ break;
+ case SCTP_TIMER_TYPE_HEARTBEAT:
+ if ((stcb == NULL) || (inp == NULL) || (net == NULL)) {
+ break;
+ }
+ SCTP_STAT_INCR(sctps_timoheartbeat);
+ stcb->asoc.timoheartbeat++;
+ if (sctp_heartbeat_timer(inp, stcb, net)) {
+ /* no need to unlock on tcb its gone */
+ goto out_decr;
+ }
+#ifdef SCTP_AUDITING_ENABLED
+ sctp_auditing(4, inp, stcb, net);
+#endif
+ if (!(net->dest_state & SCTP_ADDR_NOHB)) {
+ sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
+ sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
+ }
+ break;
+ case SCTP_TIMER_TYPE_COOKIE:
+ if ((stcb == NULL) || (inp == NULL)) {
+ break;
+ }
+
+ if (sctp_cookie_timer(inp, stcb, net)) {
+ /* no need to unlock on tcb its gone */
+ goto out_decr;
+ }
+ SCTP_STAT_INCR(sctps_timocookie);
+ stcb->asoc.timocookie++;
+#ifdef SCTP_AUDITING_ENABLED
+ sctp_auditing(4, inp, stcb, net);
+#endif
+ /*
+ * We consider T3 and Cookie timer pretty much the same with
+ * respect to where from in chunk_output.
+ */
+ sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
+ break;
+ case SCTP_TIMER_TYPE_NEWCOOKIE:
+ {
+ struct timeval tv;
+ int i, secret;
+ if (inp == NULL) {
+ break;
+ }
+ SCTP_STAT_INCR(sctps_timosecret);
+ (void)SCTP_GETTIME_TIMEVAL(&tv);
+ SCTP_INP_WLOCK(inp);
+ inp->sctp_ep.time_of_secret_change = tv.tv_sec;
+ inp->sctp_ep.last_secret_number =
+ inp->sctp_ep.current_secret_number;
+ inp->sctp_ep.current_secret_number++;
+ if (inp->sctp_ep.current_secret_number >=
+ SCTP_HOW_MANY_SECRETS) {
+ inp->sctp_ep.current_secret_number = 0;
+ }
+ secret = (int)inp->sctp_ep.current_secret_number;
+ for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
+ inp->sctp_ep.secret_key[secret][i] =
+ sctp_select_initial_TSN(&inp->sctp_ep);
+ }
+ SCTP_INP_WUNLOCK(inp);
+ sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net);
+ }
+ did_output = 0;
+ break;
+ case SCTP_TIMER_TYPE_PATHMTURAISE:
+ if ((stcb == NULL) || (inp == NULL)) {
+ break;
+ }
+ SCTP_STAT_INCR(sctps_timopathmtu);
+ sctp_pathmtu_timer(inp, stcb, net);
+ did_output = 0;
+ break;
+ case SCTP_TIMER_TYPE_SHUTDOWNACK:
+ if ((stcb == NULL) || (inp == NULL)) {
+ break;
+ }
+ if (sctp_shutdownack_timer(inp, stcb, net)) {
+ /* no need to unlock on tcb its gone */
+ goto out_decr;
+ }
+ SCTP_STAT_INCR(sctps_timoshutdownack);
+ stcb->asoc.timoshutdownack++;
+#ifdef SCTP_AUDITING_ENABLED
+ sctp_auditing(4, inp, stcb, net);
+#endif
+ sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
+ break;
+ case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
+ if ((stcb == NULL) || (inp == NULL)) {
+ break;
+ }
+ SCTP_STAT_INCR(sctps_timoshutdownguard);
+ op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
+ "Shutdown guard timer expired");
+ sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED);
+ /* no need to unlock on tcb its gone */
+ goto out_decr;
+
+ case SCTP_TIMER_TYPE_STRRESET:
+ if ((stcb == NULL) || (inp == NULL)) {
+ break;
+ }
+ if (sctp_strreset_timer(inp, stcb, net)) {
+ /* no need to unlock on tcb its gone */
+ goto out_decr;
+ }
+ SCTP_STAT_INCR(sctps_timostrmrst);
+ sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
+ break;
+ case SCTP_TIMER_TYPE_ASCONF:
+ if ((stcb == NULL) || (inp == NULL)) {
+ break;
+ }
+ if (sctp_asconf_timer(inp, stcb, net)) {
+ /* no need to unlock on tcb its gone */
+ goto out_decr;
+ }
+ SCTP_STAT_INCR(sctps_timoasconf);
+#ifdef SCTP_AUDITING_ENABLED
+ sctp_auditing(4, inp, stcb, net);
+#endif
+ sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
+ break;
+ case SCTP_TIMER_TYPE_PRIM_DELETED:
+ if ((stcb == NULL) || (inp == NULL)) {
+ break;
+ }
+ sctp_delete_prim_timer(inp, stcb, net);
+ SCTP_STAT_INCR(sctps_timodelprim);
+ break;
+
+ case SCTP_TIMER_TYPE_AUTOCLOSE:
+ if ((stcb == NULL) || (inp == NULL)) {
+ break;
+ }
+ SCTP_STAT_INCR(sctps_timoautoclose);
+ sctp_autoclose_timer(inp, stcb, net);
+ sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
+ did_output = 0;
+ break;
+ case SCTP_TIMER_TYPE_ASOCKILL:
+ if ((stcb == NULL) || (inp == NULL)) {
+ break;
+ }
+ SCTP_STAT_INCR(sctps_timoassockill);
+ /* Can we free it yet? */
+ SCTP_INP_DECR_REF(inp);
+ sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL,
+ SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ so = SCTP_INP_SO(inp);
+ atomic_add_int(&stcb->asoc.refcnt, 1);
+ SCTP_TCB_UNLOCK(stcb);
+ SCTP_SOCKET_LOCK(so, 1);
+ SCTP_TCB_LOCK(stcb);
+ atomic_subtract_int(&stcb->asoc.refcnt, 1);
+#endif
+ (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
+ SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ SCTP_SOCKET_UNLOCK(so, 1);
+#endif
+ /*
+ * free asoc, always unlocks (or destroy's) so prevent
+ * duplicate unlock or unlock of a free mtx :-0
+ */
+ stcb = NULL;
+ goto out_no_decr;
+ case SCTP_TIMER_TYPE_INPKILL:
+ SCTP_STAT_INCR(sctps_timoinpkill);
+ if (inp == NULL) {
+ break;
+ }
+ /*
+ * special case, take away our increment since WE are the
+ * killer
+ */
+ SCTP_INP_DECR_REF(inp);
+ sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL,
+ SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
+#if defined(__APPLE__)
+ SCTP_SOCKET_LOCK(SCTP_INP_SO(inp), 1);
+#endif
+ sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
+ SCTP_CALLED_FROM_INPKILL_TIMER);
+#if defined(__APPLE__)
+ SCTP_SOCKET_UNLOCK(SCTP_INP_SO(inp), 1);
+#endif
+ inp = NULL;
+ goto out_no_decr;
+ default:
+ SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n",
+ type);
+ break;
+ }
+#ifdef SCTP_AUDITING_ENABLED
+ sctp_audit_log(0xF1, (uint8_t) type);
+ if (inp)
+ sctp_auditing(5, inp, stcb, net);
+#endif
+ if ((did_output) && stcb) {
+ /*
+ * Now we need to clean up the control chunk chain if an
+ * ECNE is on it. It must be marked as UNSENT again so next
+ * call will continue to send it until such time that we get
+ * a CWR, to remove it. It is, however, less likely that we
+ * will find a ecn echo on the chain though.
+ */
+ sctp_fix_ecn_echo(&stcb->asoc);
+ }
+get_out:
+ if (stcb) {
+ SCTP_TCB_UNLOCK(stcb);
+ }
+
+out_decr:
+ if (inp) {
+ SCTP_INP_DECR_REF(inp);
+ }
+
+out_no_decr:
+ SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type = %d)\n", type);
+#if defined(__FreeBSD__) && __FreeBSD_version >= 801000
+ CURVNET_RESTORE();
+#endif
+}
+
+void
+sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
+ struct sctp_nets *net)
+{
+ uint32_t to_ticks;
+ struct sctp_timer *tmr;
+
+ if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL))
+ return;
+
+ tmr = NULL;
+ if (stcb) {
+ SCTP_TCB_LOCK_ASSERT(stcb);
+ }
+ switch (t_type) {
+ case SCTP_TIMER_TYPE_ZERO_COPY:
+ tmr = &inp->sctp_ep.zero_copy_timer;
+ to_ticks = SCTP_ZERO_COPY_TICK_DELAY;
+ break;
+ case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
+ tmr = &inp->sctp_ep.zero_copy_sendq_timer;
+ to_ticks = SCTP_ZERO_COPY_SENDQ_TICK_DELAY;
+ break;
+ case SCTP_TIMER_TYPE_ADDR_WQ:
+ /* Only 1 tick away :-) */
+ tmr = &SCTP_BASE_INFO(addr_wq_timer);
+ to_ticks = SCTP_ADDRESS_TICK_DELAY;
+ break;
+ case SCTP_TIMER_TYPE_SEND:
+ /* Here we use the RTO timer */
+ {
+ int rto_val;
+
+ if ((stcb == NULL) || (net == NULL)) {
+ return;
+ }
+ tmr = &net->rxt_timer;
+ if (net->RTO == 0) {
+ rto_val = stcb->asoc.initial_rto;
+ } else {
+ rto_val = net->RTO;
+ }
+ to_ticks = MSEC_TO_TICKS(rto_val);
+ }
+ break;
+ case SCTP_TIMER_TYPE_INIT:
+ /*
+ * Here we use the INIT timer default usually about 1
+ * minute.
+ */
+ if ((stcb == NULL) || (net == NULL)) {
+ return;
+ }
+ tmr = &net->rxt_timer;
+ if (net->RTO == 0) {
+ to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
+ } else {
+ to_ticks = MSEC_TO_TICKS(net->RTO);
+ }
+ break;
+ case SCTP_TIMER_TYPE_RECV:
+ /*
+ * Here we use the Delayed-Ack timer value from the inp
+ * ususually about 200ms.
+ */
+ if (stcb == NULL) {
+ return;
+ }
+ tmr = &stcb->asoc.dack_timer;
+ to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack);
+ break;
+ case SCTP_TIMER_TYPE_SHUTDOWN:
+ /* Here we use the RTO of the destination. */
+ if ((stcb == NULL) || (net == NULL)) {
+ return;
+ }
+ if (net->RTO == 0) {
+ to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
+ } else {
+ to_ticks = MSEC_TO_TICKS(net->RTO);
+ }
+ tmr = &net->rxt_timer;
+ break;
+ case SCTP_TIMER_TYPE_HEARTBEAT:
+ /*
+ * the net is used here so that we can add in the RTO. Even
+ * though we use a different timer. We also add the HB timer
+ * PLUS a random jitter.
+ */
+ if ((stcb == NULL) || (net == NULL)) {
+ return;
+ } else {
+ uint32_t rndval;
+ uint32_t jitter;
+
+ if ((net->dest_state & SCTP_ADDR_NOHB) &&
+ !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
+ return;
+ }
+ if (net->RTO == 0) {
+ to_ticks = stcb->asoc.initial_rto;
+ } else {
+ to_ticks = net->RTO;
+ }
+ rndval = sctp_select_initial_TSN(&inp->sctp_ep);
+ jitter = rndval % to_ticks;
+ if (jitter >= (to_ticks >> 1)) {
+ to_ticks = to_ticks + (jitter - (to_ticks >> 1));
+ } else {
+ to_ticks = to_ticks - jitter;
+ }
+ if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
+ !(net->dest_state & SCTP_ADDR_PF)) {
+ to_ticks += net->heart_beat_delay;
+ }
+ /*
+ * Now we must convert the to_ticks that are now in
+ * ms to ticks.
+ */
+ to_ticks = MSEC_TO_TICKS(to_ticks);
+ tmr = &net->hb_timer;
+ }
+ break;
+ case SCTP_TIMER_TYPE_COOKIE:
+ /*
+ * Here we can use the RTO timer from the network since one
+ * RTT was compelete. If a retran happened then we will be
+ * using the RTO initial value.
+ */
+ if ((stcb == NULL) || (net == NULL)) {
+ return;
+ }
+ if (net->RTO == 0) {
+ to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
+ } else {
+ to_ticks = MSEC_TO_TICKS(net->RTO);
+ }
+ tmr = &net->rxt_timer;
+ break;
+ case SCTP_TIMER_TYPE_NEWCOOKIE:
+ /*
+ * nothing needed but the endpoint here ususually about 60
+ * minutes.
+ */
+ tmr = &inp->sctp_ep.signature_change;
+ to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
+ break;
+ case SCTP_TIMER_TYPE_ASOCKILL:
+ if (stcb == NULL) {
+ return;
+ }
+ tmr = &stcb->asoc.strreset_timer;
+ to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT);
+ break;
+ case SCTP_TIMER_TYPE_INPKILL:
+ /*
+ * The inp is setup to die. We re-use the signature_chage
+ * timer since that has stopped and we are in the GONE
+ * state.
+ */
+ tmr = &inp->sctp_ep.signature_change;
+ to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT);
+ break;
+ case SCTP_TIMER_TYPE_PATHMTURAISE:
+ /*
+ * Here we use the value found in the EP for PMTU ususually
+ * about 10 minutes.
+ */
+ if ((stcb == NULL) || (net == NULL)) {
+ return;
+ }
+ if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
+ return;
+ }
+ to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
+ tmr = &net->pmtu_timer;
+ break;
+ case SCTP_TIMER_TYPE_SHUTDOWNACK:
+ /* Here we use the RTO of the destination */
+ if ((stcb == NULL) || (net == NULL)) {
+ return;
+ }
+ if (net->RTO == 0) {
+ to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
+ } else {
+ to_ticks = MSEC_TO_TICKS(net->RTO);
+ }
+ tmr = &net->rxt_timer;
+ break;
+ case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
+ /*
+ * Here we use the endpoints shutdown guard timer usually
+ * about 3 minutes.
+ */
+ if (stcb == NULL) {
+ return;
+ }
+ if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) {
+ to_ticks = 5 * MSEC_TO_TICKS(stcb->asoc.maxrto);
+ } else {
+ to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
+ }
+ tmr = &stcb->asoc.shut_guard_timer;
+ break;
+ case SCTP_TIMER_TYPE_STRRESET:
+ /*
+ * Here the timer comes from the stcb but its value is from
+ * the net's RTO.
+ */
+ if ((stcb == NULL) || (net == NULL)) {
+ return;
+ }
+ if (net->RTO == 0) {
+ to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
+ } else {
+ to_ticks = MSEC_TO_TICKS(net->RTO);
+ }
+ tmr = &stcb->asoc.strreset_timer;
+ break;
+ case SCTP_TIMER_TYPE_ASCONF:
+ /*
+ * Here the timer comes from the stcb but its value is from
+ * the net's RTO.
+ */
+ if ((stcb == NULL) || (net == NULL)) {
+ return;
+ }
+ if (net->RTO == 0) {
+ to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
+ } else {
+ to_ticks = MSEC_TO_TICKS(net->RTO);
+ }
+ tmr = &stcb->asoc.asconf_timer;
+ break;
+ case SCTP_TIMER_TYPE_PRIM_DELETED:
+ if ((stcb == NULL) || (net != NULL)) {
+ return;
+ }
+ to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
+ tmr = &stcb->asoc.delete_prim_timer;
+ break;
+ case SCTP_TIMER_TYPE_AUTOCLOSE:
+ if (stcb == NULL) {
+ return;
+ }
+ if (stcb->asoc.sctp_autoclose_ticks == 0) {
+ /*
+ * Really an error since stcb is NOT set to
+ * autoclose
+ */
+ return;
+ }
+ to_ticks = stcb->asoc.sctp_autoclose_ticks;
+ tmr = &stcb->asoc.autoclose_timer;
+ break;
+ default:
+ SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
+ __func__, t_type);
+ return;
+ break;
+ }
+ if ((to_ticks <= 0) || (tmr == NULL)) {
+ SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n",
+ __func__, t_type, to_ticks, (void *)tmr);
+ return;
+ }
+ if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
+ /*
+ * we do NOT allow you to have it already running. if it is
+ * we leave the current one up unchanged
+ */
+ return;
+ }
+ /* At this point we can proceed */
+ if (t_type == SCTP_TIMER_TYPE_SEND) {
+ stcb->asoc.num_send_timers_up++;
+ }
+ tmr->stopped_from = 0;
+ tmr->type = t_type;
+ tmr->ep = (void *)inp;
+ tmr->tcb = (void *)stcb;
+ tmr->net = (void *)net;
+ tmr->self = (void *)tmr;
+#if defined(__FreeBSD__) && __FreeBSD_version >= 800000
+ tmr->vnet = (void *)curvnet;
+#endif
+#ifndef __Panda__
+ tmr->ticks = sctp_get_tick_count();
+#endif
+ (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr);
+ return;
+}
+
+void
+sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
+ struct sctp_nets *net, uint32_t from)
+{
+ struct sctp_timer *tmr;
+
+ if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) &&
+ (inp == NULL))
+ return;
+
+ tmr = NULL;
+ if (stcb) {
+ SCTP_TCB_LOCK_ASSERT(stcb);
+ }
+ switch (t_type) {
+ case SCTP_TIMER_TYPE_ZERO_COPY:
+ tmr = &inp->sctp_ep.zero_copy_timer;
+ break;
+ case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
+ tmr = &inp->sctp_ep.zero_copy_sendq_timer;
+ break;
+ case SCTP_TIMER_TYPE_ADDR_WQ:
+ tmr = &SCTP_BASE_INFO(addr_wq_timer);
+ break;
+ case SCTP_TIMER_TYPE_SEND:
+ if ((stcb == NULL) || (net == NULL)) {
+ return;
+ }
+ tmr = &net->rxt_timer;
+ break;
+ case SCTP_TIMER_TYPE_INIT:
+ if ((stcb == NULL) || (net == NULL)) {
+ return;
+ }
+ tmr = &net->rxt_timer;
+ break;
+ case SCTP_TIMER_TYPE_RECV:
+ if (stcb == NULL) {
+ return;
+ }
+ tmr = &stcb->asoc.dack_timer;
+ break;
+ case SCTP_TIMER_TYPE_SHUTDOWN:
+ if ((stcb == NULL) || (net == NULL)) {
+ return;
+ }
+ tmr = &net->rxt_timer;
+ break;
+ case SCTP_TIMER_TYPE_HEARTBEAT:
+ if ((stcb == NULL) || (net == NULL)) {
+ return;
+ }
+ tmr = &net->hb_timer;
+ break;
+ case SCTP_TIMER_TYPE_COOKIE:
+ if ((stcb == NULL) || (net == NULL)) {
+ return;
+ }
+ tmr = &net->rxt_timer;
+ break;
+ case SCTP_TIMER_TYPE_NEWCOOKIE:
+ /* nothing needed but the endpoint here */
+ tmr = &inp->sctp_ep.signature_change;
+ /*
+ * We re-use the newcookie timer for the INP kill timer. We
+ * must assure that we do not kill it by accident.
+ */
+ break;
+ case SCTP_TIMER_TYPE_ASOCKILL:
+ /*
+ * Stop the asoc kill timer.
+ */
+ if (stcb == NULL) {
+ return;
+ }
+ tmr = &stcb->asoc.strreset_timer;
+ break;
+
+ case SCTP_TIMER_TYPE_INPKILL:
+ /*
+ * The inp is setup to die. We re-use the signature_chage
+ * timer since that has stopped and we are in the GONE
+ * state.
+ */
+ tmr = &inp->sctp_ep.signature_change;
+ break;
+ case SCTP_TIMER_TYPE_PATHMTURAISE:
+ if ((stcb == NULL) || (net == NULL)) {
+ return;
+ }
+ tmr = &net->pmtu_timer;
+ break;
+ case SCTP_TIMER_TYPE_SHUTDOWNACK:
+ if ((stcb == NULL) || (net == NULL)) {
+ return;
+ }
+ tmr = &net->rxt_timer;
+ break;
+ case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
+ if (stcb == NULL) {
+ return;
+ }
+ tmr = &stcb->asoc.shut_guard_timer;
+ break;
+ case SCTP_TIMER_TYPE_STRRESET:
+ if (stcb == NULL) {
+ return;
+ }
+ tmr = &stcb->asoc.strreset_timer;
+ break;
+ case SCTP_TIMER_TYPE_ASCONF:
+ if (stcb == NULL) {
+ return;
+ }
+ tmr = &stcb->asoc.asconf_timer;
+ break;
+ case SCTP_TIMER_TYPE_PRIM_DELETED:
+ if (stcb == NULL) {
+ return;
+ }
+ tmr = &stcb->asoc.delete_prim_timer;
+ break;
+ case SCTP_TIMER_TYPE_AUTOCLOSE:
+ if (stcb == NULL) {
+ return;
+ }
+ tmr = &stcb->asoc.autoclose_timer;
+ break;
+ default:
+ SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
+ __func__, t_type);
+ break;
+ }
+ if (tmr == NULL) {
+ return;
+ }
+ if ((tmr->type != t_type) && tmr->type) {
+ /*
+ * Ok we have a timer that is under joint use. Cookie timer
+ * per chance with the SEND timer. We therefore are NOT
+ * running the timer that the caller wants stopped. So just
+ * return.
+ */
+ return;
+ }
+ if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
+ stcb->asoc.num_send_timers_up--;
+ if (stcb->asoc.num_send_timers_up < 0) {
+ stcb->asoc.num_send_timers_up = 0;
+ }
+ }
+ tmr->self = NULL;
+ tmr->stopped_from = from;
+ (void)SCTP_OS_TIMER_STOP(&tmr->timer);
+ return;
+}
+
+uint32_t
+sctp_calculate_len(struct mbuf *m)
+{
+ uint32_t tlen = 0;
+ struct mbuf *at;
+
+ at = m;
+ while (at) {
+ tlen += SCTP_BUF_LEN(at);
+ at = SCTP_BUF_NEXT(at);
+ }
+ return (tlen);
+}
+
+void
+sctp_mtu_size_reset(struct sctp_inpcb *inp,
+ struct sctp_association *asoc, uint32_t mtu)
+{
+ /*
+ * Reset the P-MTU size on this association, this involves changing
+ * the asoc MTU, going through ANY chunk+overhead larger than mtu to
+ * allow the DF flag to be cleared.
+ */
+ struct sctp_tmit_chunk *chk;
+ unsigned int eff_mtu, ovh;
+
+ asoc->smallest_mtu = mtu;
+ if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
+ ovh = SCTP_MIN_OVERHEAD;
+ } else {
+ ovh = SCTP_MIN_V4_OVERHEAD;
+ }
+ eff_mtu = mtu - ovh;
+ TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
+ if (chk->send_size > eff_mtu) {
+ chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
+ }
+ }
+ TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
+ if (chk->send_size > eff_mtu) {
+ chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
+ }
+ }
+}
+
+
+/*
+ * given an association and starting time of the current RTT period return
+ * RTO in number of msecs net should point to the current network
+ */
+
+uint32_t
+sctp_calculate_rto(struct sctp_tcb *stcb,
+ struct sctp_association *asoc,
+ struct sctp_nets *net,
+ struct timeval *told,
+ int safe, int rtt_from_sack)
+{
+ /*-
+ * given an association and the starting time of the current RTT
+ * period (in value1/value2) return RTO in number of msecs.
+ */
+ int32_t rtt; /* RTT in ms */
+ uint32_t new_rto;
+ int first_measure = 0;
+ struct timeval now, then, *old;
+
+ /* Copy it out for sparc64 */
+ if (safe == sctp_align_unsafe_makecopy) {
+ old = &then;
+ memcpy(&then, told, sizeof(struct timeval));
+ } else if (safe == sctp_align_safe_nocopy) {
+ old = told;
+ } else {
+ /* error */
+ SCTP_PRINTF("Huh, bad rto calc call\n");
+ return (0);
+ }
+ /************************/
+ /* 1. calculate new RTT */
+ /************************/
+ /* get the current time */
+ if (stcb->asoc.use_precise_time) {
+ (void)SCTP_GETPTIME_TIMEVAL(&now);
+ } else {
+ (void)SCTP_GETTIME_TIMEVAL(&now);
+ }
+ timevalsub(&now, old);
+ /* store the current RTT in us */
+ net->rtt = (uint64_t)1000000 * (uint64_t)now.tv_sec +
+ (uint64_t)now.tv_usec;
+ /* compute rtt in ms */
+ rtt = (int32_t)(net->rtt / 1000);
+ if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
+ /* Tell the CC module that a new update has just occurred from a sack */
+ (*asoc->cc_functions.sctp_rtt_calculated)(stcb, net, &now);
+ }
+ /* Do we need to determine the lan? We do this only
+ * on sacks i.e. RTT being determined from data not
+ * non-data (HB/INIT->INITACK).
+ */
+ if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
+ (net->lan_type == SCTP_LAN_UNKNOWN)) {
+ if (net->rtt > SCTP_LOCAL_LAN_RTT) {
+ net->lan_type = SCTP_LAN_INTERNET;
+ } else {
+ net->lan_type = SCTP_LAN_LOCAL;
+ }
+ }
+
+ /***************************/
+ /* 2. update RTTVAR & SRTT */
+ /***************************/
+ /*-
+ * Compute the scaled average lastsa and the
+ * scaled variance lastsv as described in van Jacobson
+ * Paper "Congestion Avoidance and Control", Annex A.
+ *
+ * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
+ * (net->lastsa >> SCTP_RTT_VAR_SHIFT) is the rttvar
+ */
+ if (net->RTO_measured) {
+ rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
+ net->lastsa += rtt;
+ if (rtt < 0) {
+ rtt = -rtt;
+ }
+ rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
+ net->lastsv += rtt;
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
+ rto_logging(net, SCTP_LOG_RTTVAR);
+ }
+ } else {
+ /* First RTO measurment */
+ net->RTO_measured = 1;
+ first_measure = 1;
+ net->lastsa = rtt << SCTP_RTT_SHIFT;
+ net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
+ rto_logging(net, SCTP_LOG_INITIAL_RTT);
+ }
+ }
+ if (net->lastsv == 0) {
+ net->lastsv = SCTP_CLOCK_GRANULARITY;
+ }
+ new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
+ if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
+ (stcb->asoc.sat_network_lockout == 0)) {
+ stcb->asoc.sat_network = 1;
+ } else if ((!first_measure) && stcb->asoc.sat_network) {
+ stcb->asoc.sat_network = 0;
+ stcb->asoc.sat_network_lockout = 1;
+ }
+ /* bound it, per C6/C7 in Section 5.3.1 */
+ if (new_rto < stcb->asoc.minrto) {
+ new_rto = stcb->asoc.minrto;
+ }
+ if (new_rto > stcb->asoc.maxrto) {
+ new_rto = stcb->asoc.maxrto;
+ }
+ /* we are now returning the RTO */
+ return (new_rto);
+}
+
+/*
+ * return a pointer to a contiguous piece of data from the given mbuf chain
+ * starting at 'off' for 'len' bytes. If the desired piece spans more than
+ * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
+ * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
+ */
+caddr_t
+sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t * in_ptr)
+{
+ uint32_t count;
+ uint8_t *ptr;
+
+ ptr = in_ptr;
+ if ((off < 0) || (len <= 0))
+ return (NULL);
+
+ /* find the desired start location */
+ while ((m != NULL) && (off > 0)) {
+ if (off < SCTP_BUF_LEN(m))
+ break;
+ off -= SCTP_BUF_LEN(m);
+ m = SCTP_BUF_NEXT(m);
+ }
+ if (m == NULL)
+ return (NULL);
+
+ /* is the current mbuf large enough (eg. contiguous)? */
+ if ((SCTP_BUF_LEN(m) - off) >= len) {
+ return (mtod(m, caddr_t) + off);
+ } else {
+ /* else, it spans more than one mbuf, so save a temp copy... */
+ while ((m != NULL) && (len > 0)) {
+ count = min(SCTP_BUF_LEN(m) - off, len);
+ bcopy(mtod(m, caddr_t) + off, ptr, count);
+ len -= count;
+ ptr += count;
+ off = 0;
+ m = SCTP_BUF_NEXT(m);
+ }
+ if ((m == NULL) && (len > 0))
+ return (NULL);
+ else
+ return ((caddr_t)in_ptr);
+ }
+}
+
+
+
+struct sctp_paramhdr *
+sctp_get_next_param(struct mbuf *m,
+ int offset,
+ struct sctp_paramhdr *pull,
+ int pull_limit)
+{
+ /* This just provides a typed signature to Peter's Pull routine */
+ return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
+ (uint8_t *) pull));
+}
+
+
+struct mbuf *
+sctp_add_pad_tombuf(struct mbuf *m, int padlen)
+{
+ struct mbuf *m_last;
+ caddr_t dp;
+
+ if (padlen > 3) {
+ return (NULL);
+ }
+ if (padlen <= M_TRAILINGSPACE(m)) {
+ /*
+ * The easy way. We hope the majority of the time we hit
+ * here :)
+ */
+ m_last = m;
+ } else {
+ /* Hard way we must grow the mbuf chain */
+ m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA);
+ if (m_last == NULL) {
+ return (NULL);
+ }
+ SCTP_BUF_LEN(m_last) = 0;
+ SCTP_BUF_NEXT(m_last) = NULL;
+ SCTP_BUF_NEXT(m) = m_last;
+ }
+ dp = mtod(m_last, caddr_t) + SCTP_BUF_LEN(m_last);
+ SCTP_BUF_LEN(m_last) += padlen;
+ memset(dp, 0, padlen);
+ return (m_last);
+}
+
+struct mbuf *
+sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
+{
+ /* find the last mbuf in chain and pad it */
+ struct mbuf *m_at;
+
+ if (last_mbuf != NULL) {
+ return (sctp_add_pad_tombuf(last_mbuf, padval));
+ } else {
+ for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
+ if (SCTP_BUF_NEXT(m_at) == NULL) {
+ return (sctp_add_pad_tombuf(m_at, padval));
+ }
+ }
+ }
+ return (NULL);
+}
+
+static void
+sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
+ uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked
+#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
+ SCTP_UNUSED
+#endif
+ )
+{
+ struct mbuf *m_notify;
+ struct sctp_assoc_change *sac;
+ struct sctp_queued_to_read *control;
+ unsigned int notif_len;
+ uint16_t abort_len;
+ unsigned int i;
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ struct socket *so;
+#endif
+
+ if (stcb == NULL) {
+ return;
+ }
+ if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
+ notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
+ if (abort != NULL) {
+ abort_len = ntohs(abort->ch.chunk_length);
+ } else {
+ abort_len = 0;
+ }
+ if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
+ notif_len += SCTP_ASSOC_SUPPORTS_MAX;
+ } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
+ notif_len += abort_len;
+ }
+ m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
+ if (m_notify == NULL) {
+ /* Retry with smaller value. */
+ notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
+ m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
+ if (m_notify == NULL) {
+ goto set_error;
+ }
+ }
+ SCTP_BUF_NEXT(m_notify) = NULL;
+ sac = mtod(m_notify, struct sctp_assoc_change *);
+ memset(sac, 0, notif_len);
+ sac->sac_type = SCTP_ASSOC_CHANGE;
+ sac->sac_flags = 0;
+ sac->sac_length = sizeof(struct sctp_assoc_change);
+ sac->sac_state = state;
+ sac->sac_error = error;
+ /* XXX verify these stream counts */
+ sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
+ sac->sac_inbound_streams = stcb->asoc.streamincnt;
+ sac->sac_assoc_id = sctp_get_associd(stcb);
+ if (notif_len > sizeof(struct sctp_assoc_change)) {
+ if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
+ i = 0;
+ if (stcb->asoc.prsctp_supported == 1) {
+ sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
+ }
+ if (stcb->asoc.auth_supported == 1) {
+ sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
+ }
+ if (stcb->asoc.asconf_supported == 1) {
+ sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
+ }
+ if (stcb->asoc.idata_supported == 1) {
+ sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_INTERLEAVING;
+ }
+ sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
+ if (stcb->asoc.reconfig_supported == 1) {
+ sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
+ }
+ sac->sac_length += i;
+ } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
+ memcpy(sac->sac_info, abort, abort_len);
+ sac->sac_length += abort_len;
+ }
+ }
+ SCTP_BUF_LEN(m_notify) = sac->sac_length;
+ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
+ 0, 0, stcb->asoc.context, 0, 0, 0,
+ m_notify);
+ if (control != NULL) {
+ control->length = SCTP_BUF_LEN(m_notify);
+ /* not that we need this */
+ control->tail_mbuf = m_notify;
+ control->spec_flags = M_NOTIFICATION;
+ sctp_add_to_readq(stcb->sctp_ep, stcb,
+ control,
+ &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
+ so_locked);
+ } else {
+ sctp_m_freem(m_notify);
+ }
+ }
+ /*
+ * For 1-to-1 style sockets, we send up and error when an ABORT
+ * comes in.
+ */
+set_error:
+ if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
+ (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
+ ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
+ SOCK_LOCK(stcb->sctp_socket);
+ if (from_peer) {
+ if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) {
+ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
+ stcb->sctp_socket->so_error = ECONNREFUSED;
+ } else {
+ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
+ stcb->sctp_socket->so_error = ECONNRESET;
+ }
+ } else {
+ if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) ||
+ (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_ECHOED)) {
+ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
+ stcb->sctp_socket->so_error = ETIMEDOUT;
+ } else {
+ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
+ stcb->sctp_socket->so_error = ECONNABORTED;
+ }
+ }
+ }
+ /* Wake ANY sleepers */
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ so = SCTP_INP_SO(stcb->sctp_ep);
+ if (!so_locked) {
+ atomic_add_int(&stcb->asoc.refcnt, 1);
+ SCTP_TCB_UNLOCK(stcb);
+ SCTP_SOCKET_LOCK(so, 1);
+ SCTP_TCB_LOCK(stcb);
+ atomic_subtract_int(&stcb->asoc.refcnt, 1);
+ if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
+ SCTP_SOCKET_UNLOCK(so, 1);
+ return;
+ }
+ }
+#endif
+ if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
+ (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
+ ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
+#if defined(__APPLE__)
+ socantrcvmore(stcb->sctp_socket);
+#else
+ socantrcvmore_locked(stcb->sctp_socket);
+#endif
+ }
+ sorwakeup(stcb->sctp_socket);
+ sowwakeup(stcb->sctp_socket);
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ if (!so_locked) {
+ SCTP_SOCKET_UNLOCK(so, 1);
+ }
+#endif
+}
+
+static void
+sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
+ struct sockaddr *sa, uint32_t error, int so_locked
+#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
+ SCTP_UNUSED
+#endif
+)
+{
+ struct mbuf *m_notify;
+ struct sctp_paddr_change *spc;
+ struct sctp_queued_to_read *control;
+
+ if ((stcb == NULL) ||
+ sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
+ /* event not enabled */
+ return;
+ }
+ m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA);
+ if (m_notify == NULL)
+ return;
+ SCTP_BUF_LEN(m_notify) = 0;
+ spc = mtod(m_notify, struct sctp_paddr_change *);
+ memset(spc, 0, sizeof(struct sctp_paddr_change));
+ spc->spc_type = SCTP_PEER_ADDR_CHANGE;
+ spc->spc_flags = 0;
+ spc->spc_length = sizeof(struct sctp_paddr_change);
+ switch (sa->sa_family) {
+#ifdef INET
+ case AF_INET:
+#ifdef INET6
+ if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
+ in6_sin_2_v4mapsin6((struct sockaddr_in *)sa,
+ (struct sockaddr_in6 *)&spc->spc_aaddr);
+ } else {
+ memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
+ }
+#else
+ memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
+#endif
+ break;
+#endif
+#ifdef INET6
+ case AF_INET6:
+ {
+#ifdef SCTP_EMBEDDED_V6_SCOPE
+ struct sockaddr_in6 *sin6;
+#endif /* SCTP_EMBEDDED_V6_SCOPE */
+ memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
+
+#ifdef SCTP_EMBEDDED_V6_SCOPE
+ sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
+ if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
+ if (sin6->sin6_scope_id == 0) {
+ /* recover scope_id for user */
+#ifdef SCTP_KAME
+ (void)sa6_recoverscope(sin6);
+#else
+ (void)in6_recoverscope(sin6, &sin6->sin6_addr,
+ NULL);
+#endif
+ } else {
+ /* clear embedded scope_id for user */
+ in6_clearscope(&sin6->sin6_addr);
+ }
+ }
+#endif /* SCTP_EMBEDDED_V6_SCOPE */
+ break;
+ }
+#endif
+#if defined(__Userspace__)
+ case AF_CONN:
+ memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_conn));
+ break;
+#endif
+ default:
+ /* TSNH */
+ break;
+ }
+ spc->spc_state = state;
+ spc->spc_error = error;
+ spc->spc_assoc_id = sctp_get_associd(stcb);
+
+ SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
+ SCTP_BUF_NEXT(m_notify) = NULL;
+
+ /* append to socket */
+ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
+ 0, 0, stcb->asoc.context, 0, 0, 0,
+ m_notify);
+ if (control == NULL) {
+ /* no memory */
+ sctp_m_freem(m_notify);
+ return;
+ }
+ control->length = SCTP_BUF_LEN(m_notify);
+ control->spec_flags = M_NOTIFICATION;
+ /* not that we need this */
+ control->tail_mbuf = m_notify;
+ sctp_add_to_readq(stcb->sctp_ep, stcb,
+ control,
+ &stcb->sctp_socket->so_rcv, 1,
+ SCTP_READ_LOCK_NOT_HELD,
+ so_locked);
+}
+
+
+static void
+sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error,
+ struct sctp_tmit_chunk *chk, int so_locked
+#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
+ SCTP_UNUSED
+#endif
+ )
+{
+ struct mbuf *m_notify;
+ struct sctp_send_failed *ssf;
+ struct sctp_send_failed_event *ssfe;
+ struct sctp_queued_to_read *control;
+ struct sctp_chunkhdr *chkhdr;
+ int notifhdr_len, chk_len, chkhdr_len, padding_len, payload_len;
+
+ if ((stcb == NULL) ||
+ (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
+ sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
+ /* event not enabled */
+ return;
+ }
+
+ if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
+ notifhdr_len = sizeof(struct sctp_send_failed_event);
+ } else {
+ notifhdr_len = sizeof(struct sctp_send_failed);
+ }
+ m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
+ if (m_notify == NULL)
+ /* no space left */
+ return;
+ SCTP_BUF_LEN(m_notify) = notifhdr_len;
+ if (stcb->asoc.idata_supported) {
+ chkhdr_len = sizeof(struct sctp_idata_chunk);
+ } else {
+ chkhdr_len = sizeof(struct sctp_data_chunk);
+ }
+ /* Use some defaults in case we can't access the chunk header */
+ if (chk->send_size >= chkhdr_len) {
+ payload_len = chk->send_size - chkhdr_len;
+ } else {
+ payload_len = 0;
+ }
+ padding_len = 0;
+ if (chk->data != NULL) {
+ chkhdr = mtod(chk->data, struct sctp_chunkhdr *);
+ if (chkhdr != NULL) {
+ chk_len = ntohs(chkhdr->chunk_length);
+ if ((chk_len >= chkhdr_len) &&
+ (chk->send_size >= chk_len) &&
+ (chk->send_size - chk_len < 4)) {
+ padding_len = chk->send_size - chk_len;
+ payload_len = chk->send_size - chkhdr_len - padding_len;
+ }
+ }
+ }
+ if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
+ ssfe = mtod(m_notify, struct sctp_send_failed_event *);
+ memset(ssfe, 0, notifhdr_len);
+ ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
+ if (sent) {
+ ssfe->ssfe_flags = SCTP_DATA_SENT;
+ } else {
+ ssfe->ssfe_flags = SCTP_DATA_UNSENT;
+ }
+ ssfe->ssfe_length = (uint32_t)(notifhdr_len + payload_len);
+ ssfe->ssfe_error = error;
+ /* not exactly what the user sent in, but should be close :) */
+ ssfe->ssfe_info.snd_sid = chk->rec.data.sid;
+ ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
+ ssfe->ssfe_info.snd_ppid = chk->rec.data.ppid;
+ ssfe->ssfe_info.snd_context = chk->rec.data.context;
+ ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
+ ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
+ } else {
+ ssf = mtod(m_notify, struct sctp_send_failed *);
+ memset(ssf, 0, notifhdr_len);
+ ssf->ssf_type = SCTP_SEND_FAILED;
+ if (sent) {
+ ssf->ssf_flags = SCTP_DATA_SENT;
+ } else {
+ ssf->ssf_flags = SCTP_DATA_UNSENT;
+ }
+ ssf->ssf_length = (uint32_t)(notifhdr_len + payload_len);
+ ssf->ssf_error = error;
+ /* not exactly what the user sent in, but should be close :) */
+ ssf->ssf_info.sinfo_stream = chk->rec.data.sid;
+ ssf->ssf_info.sinfo_ssn = (uint16_t)chk->rec.data.mid;
+ ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
+ ssf->ssf_info.sinfo_ppid = chk->rec.data.ppid;
+ ssf->ssf_info.sinfo_context = chk->rec.data.context;
+ ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
+ ssf->ssf_assoc_id = sctp_get_associd(stcb);
+ }
+ if (chk->data != NULL) {
+ /* Trim off the sctp chunk header (it should be there) */
+ if (chk->send_size == chkhdr_len + payload_len + padding_len) {
+ m_adj(chk->data, chkhdr_len);
+ m_adj(chk->data, -padding_len);
+ sctp_mbuf_crush(chk->data);
+ chk->send_size -= (chkhdr_len + padding_len);
+ }
+ }
+ SCTP_BUF_NEXT(m_notify) = chk->data;
+ /* Steal off the mbuf */
+ chk->data = NULL;
+ /*
+ * For this case, we check the actual socket buffer, since the assoc
+ * is going away we don't want to overfill the socket buffer for a
+ * non-reader
+ */
+ if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
+ sctp_m_freem(m_notify);
+ return;
+ }
+ /* append to socket */
+ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
+ 0, 0, stcb->asoc.context, 0, 0, 0,
+ m_notify);
+ if (control == NULL) {
+ /* no memory */
+ sctp_m_freem(m_notify);
+ return;
+ }
+ control->spec_flags = M_NOTIFICATION;
+ sctp_add_to_readq(stcb->sctp_ep, stcb,
+ control,
+ &stcb->sctp_socket->so_rcv, 1,
+ SCTP_READ_LOCK_NOT_HELD,
+ so_locked);
+}
+
+
+static void
+sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
+ struct sctp_stream_queue_pending *sp, int so_locked
+#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
+ SCTP_UNUSED
+#endif
+ )
+{
+ struct mbuf *m_notify;
+ struct sctp_send_failed *ssf;
+ struct sctp_send_failed_event *ssfe;
+ struct sctp_queued_to_read *control;
+ int notifhdr_len;
+
+ if ((stcb == NULL) ||
+ (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
+ sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
+ /* event not enabled */
+ return;
+ }
+ if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
+ notifhdr_len = sizeof(struct sctp_send_failed_event);
+ } else {
+ notifhdr_len = sizeof(struct sctp_send_failed);
+ }
+ m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
+ if (m_notify == NULL) {
+ /* no space left */
+ return;
+ }
+ SCTP_BUF_LEN(m_notify) = notifhdr_len;
+ if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
+ ssfe = mtod(m_notify, struct sctp_send_failed_event *);
+ memset(ssfe, 0, notifhdr_len);
+ ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
+ ssfe->ssfe_flags = SCTP_DATA_UNSENT;
+ ssfe->ssfe_length = (uint32_t)(notifhdr_len + sp->length);
+ ssfe->ssfe_error = error;
+ /* not exactly what the user sent in, but should be close :) */
+ ssfe->ssfe_info.snd_sid = sp->sid;
+ if (sp->some_taken) {
+ ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
+ } else {
+ ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
+ }
+ ssfe->ssfe_info.snd_ppid = sp->ppid;
+ ssfe->ssfe_info.snd_context = sp->context;
+ ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
+ ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
+ } else {
+ ssf = mtod(m_notify, struct sctp_send_failed *);
+ memset(ssf, 0, notifhdr_len);
+ ssf->ssf_type = SCTP_SEND_FAILED;
+ ssf->ssf_flags = SCTP_DATA_UNSENT;
+ ssf->ssf_length = (uint32_t)(notifhdr_len + sp->length);
+ ssf->ssf_error = error;
+ /* not exactly what the user sent in, but should be close :) */
+ ssf->ssf_info.sinfo_stream = sp->sid;
+ ssf->ssf_info.sinfo_ssn = 0;
+ if (sp->some_taken) {
+ ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
+ } else {
+ ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
+ }
+ ssf->ssf_info.sinfo_ppid = sp->ppid;
+ ssf->ssf_info.sinfo_context = sp->context;
+ ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
+ ssf->ssf_assoc_id = sctp_get_associd(stcb);
+ }
+ SCTP_BUF_NEXT(m_notify) = sp->data;
+
+ /* Steal off the mbuf */
+ sp->data = NULL;
+ /*
+ * For this case, we check the actual socket buffer, since the assoc
+ * is going away we don't want to overfill the socket buffer for a
+ * non-reader
+ */
+ if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
+ sctp_m_freem(m_notify);
+ return;
+ }
+ /* append to socket */
+ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
+ 0, 0, stcb->asoc.context, 0, 0, 0,
+ m_notify);
+ if (control == NULL) {
+ /* no memory */
+ sctp_m_freem(m_notify);
+ return;
+ }
+ control->spec_flags = M_NOTIFICATION;
+ sctp_add_to_readq(stcb->sctp_ep, stcb,
+ control,
+ &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
+}
+
+
+
+static void
+sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
+{
+ struct mbuf *m_notify;
+ struct sctp_adaptation_event *sai;
+ struct sctp_queued_to_read *control;
+
+ if ((stcb == NULL) ||
+ sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
+ /* event not enabled */
+ return;
+ }
+
+ m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA);
+ if (m_notify == NULL)
+ /* no space left */
+ return;
+ SCTP_BUF_LEN(m_notify) = 0;
+ sai = mtod(m_notify, struct sctp_adaptation_event *);
+ memset(sai, 0, sizeof(struct sctp_adaptation_event));
+ sai->sai_type = SCTP_ADAPTATION_INDICATION;
+ sai->sai_flags = 0;
+ sai->sai_length = sizeof(struct sctp_adaptation_event);
+ sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
+ sai->sai_assoc_id = sctp_get_associd(stcb);
+
+ SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
+ SCTP_BUF_NEXT(m_notify) = NULL;
+
+ /* append to socket */
+ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
+ 0, 0, stcb->asoc.context, 0, 0, 0,
+ m_notify);
+ if (control == NULL) {
+ /* no memory */
+ sctp_m_freem(m_notify);
+ return;
+ }
+ control->length = SCTP_BUF_LEN(m_notify);
+ control->spec_flags = M_NOTIFICATION;
+ /* not that we need this */
+ control->tail_mbuf = m_notify;
+ sctp_add_to_readq(stcb->sctp_ep, stcb,
+ control,
+ &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
+}
+
+/* This always must be called with the read-queue LOCKED in the INP */
+static void
+sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
+ uint32_t val, int so_locked
+#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
+ SCTP_UNUSED
+#endif
+ )
+{
+ struct mbuf *m_notify;
+ struct sctp_pdapi_event *pdapi;
+ struct sctp_queued_to_read *control;
+ struct sockbuf *sb;
+
+ if ((stcb == NULL) ||
+ sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
+ /* event not enabled */
+ return;
+ }
+ if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
+ return;
+ }
+
+ m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA);
+ if (m_notify == NULL)
+ /* no space left */
+ return;
+ SCTP_BUF_LEN(m_notify) = 0;
+ pdapi = mtod(m_notify, struct sctp_pdapi_event *);
+ memset(pdapi, 0, sizeof(struct sctp_pdapi_event));
+ pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
+ pdapi->pdapi_flags = 0;
+ pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
+ pdapi->pdapi_indication = error;
+ pdapi->pdapi_stream = (val >> 16);
+ pdapi->pdapi_seq = (val & 0x0000ffff);
+ pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
+
+ SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
+ SCTP_BUF_NEXT(m_notify) = NULL;
+ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
+ 0, 0, stcb->asoc.context, 0, 0, 0,
+ m_notify);
+ if (control == NULL) {
+ /* no memory */
+ sctp_m_freem(m_notify);
+ return;
+ }
+ control->spec_flags = M_NOTIFICATION;
+ control->length = SCTP_BUF_LEN(m_notify);
+ /* not that we need this */
+ control->tail_mbuf = m_notify;
+ control->held_length = 0;
+ control->length = 0;
+ sb = &stcb->sctp_socket->so_rcv;
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
+ sctp_sblog(sb, control->do_not_ref_stcb?NULL:stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
+ }
+ sctp_sballoc(stcb, sb, m_notify);
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
+ sctp_sblog(sb, control->do_not_ref_stcb?NULL:stcb, SCTP_LOG_SBRESULT, 0);
+ }
+ atomic_add_int(&control->length, SCTP_BUF_LEN(m_notify));
+ control->end_added = 1;
+ if (stcb->asoc.control_pdapi)
+ TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
+ else {
+ /* we really should not see this case */
+ TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
+ }
+ if (stcb->sctp_ep && stcb->sctp_socket) {
+ /* This should always be the case */
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ struct socket *so;
+
+ so = SCTP_INP_SO(stcb->sctp_ep);
+ if (!so_locked) {
+ atomic_add_int(&stcb->asoc.refcnt, 1);
+ SCTP_TCB_UNLOCK(stcb);
+ SCTP_SOCKET_LOCK(so, 1);
+ SCTP_TCB_LOCK(stcb);
+ atomic_subtract_int(&stcb->asoc.refcnt, 1);
+ if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
+ SCTP_SOCKET_UNLOCK(so, 1);
+ return;
+ }
+ }
+#endif
+ sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ if (!so_locked) {
+ SCTP_SOCKET_UNLOCK(so, 1);
+ }
+#endif
+ }
+}
+
+static void
+sctp_notify_shutdown_event(struct sctp_tcb *stcb)
+{
+ struct mbuf *m_notify;
+ struct sctp_shutdown_event *sse;
+ struct sctp_queued_to_read *control;
+
+ /*
+ * For TCP model AND UDP connected sockets we will send an error up
+ * when an SHUTDOWN completes
+ */
+ if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
+ (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
+ /* mark socket closed for read/write and wakeup! */
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ struct socket *so;
+
+ so = SCTP_INP_SO(stcb->sctp_ep);
+ atomic_add_int(&stcb->asoc.refcnt, 1);
+ SCTP_TCB_UNLOCK(stcb);
+ SCTP_SOCKET_LOCK(so, 1);
+ SCTP_TCB_LOCK(stcb);
+ atomic_subtract_int(&stcb->asoc.refcnt, 1);
+ if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
+ SCTP_SOCKET_UNLOCK(so, 1);
+ return;
+ }
+#endif
+ socantsendmore(stcb->sctp_socket);
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ SCTP_SOCKET_UNLOCK(so, 1);
+#endif
+ }
+ if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
+ /* event not enabled */
+ return;
+ }
+
+ m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA);
+ if (m_notify == NULL)
+ /* no space left */
+ return;
+ sse = mtod(m_notify, struct sctp_shutdown_event *);
+ memset(sse, 0, sizeof(struct sctp_shutdown_event));
+ sse->sse_type = SCTP_SHUTDOWN_EVENT;
+ sse->sse_flags = 0;
+ sse->sse_length = sizeof(struct sctp_shutdown_event);
+ sse->sse_assoc_id = sctp_get_associd(stcb);
+
+ SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
+ SCTP_BUF_NEXT(m_notify) = NULL;
+
+ /* append to socket */
+ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
+ 0, 0, stcb->asoc.context, 0, 0, 0,
+ m_notify);
+ if (control == NULL) {
+ /* no memory */
+ sctp_m_freem(m_notify);
+ return;
+ }
+ control->spec_flags = M_NOTIFICATION;
+ control->length = SCTP_BUF_LEN(m_notify);
+ /* not that we need this */
+ control->tail_mbuf = m_notify;
+ sctp_add_to_readq(stcb->sctp_ep, stcb,
+ control,
+ &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
+}
+
+static void
+sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
+ int so_locked
+#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
+ SCTP_UNUSED
+#endif
+ )
+{
+ struct mbuf *m_notify;
+ struct sctp_sender_dry_event *event;
+ struct sctp_queued_to_read *control;
+
+ if ((stcb == NULL) ||
+ sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
+ /* event not enabled */
+ return;
+ }
+
+ m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA);
+ if (m_notify == NULL) {
+ /* no space left */
+ return;
+ }
+ SCTP_BUF_LEN(m_notify) = 0;
+ event = mtod(m_notify, struct sctp_sender_dry_event *);
+ memset(event, 0, sizeof(struct sctp_sender_dry_event));
+ event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
+ event->sender_dry_flags = 0;
+ event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
+ event->sender_dry_assoc_id = sctp_get_associd(stcb);
+
+ SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
+ SCTP_BUF_NEXT(m_notify) = NULL;
+
+ /* append to socket */
+ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
+ 0, 0, stcb->asoc.context, 0, 0, 0,
+ m_notify);
+ if (control == NULL) {
+ /* no memory */
+ sctp_m_freem(m_notify);
+ return;
+ }
+ control->length = SCTP_BUF_LEN(m_notify);
+ control->spec_flags = M_NOTIFICATION;
+ /* not that we need this */
+ control->tail_mbuf = m_notify;
+ sctp_add_to_readq(stcb->sctp_ep, stcb, control,
+ &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
+}
+
+
+void
+sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag)
+{
+ struct mbuf *m_notify;
+ struct sctp_queued_to_read *control;
+ struct sctp_stream_change_event *stradd;
+
+ if ((stcb == NULL) ||
+ (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) {
+ /* event not enabled */
+ return;
+ }
+ if ((stcb->asoc.peer_req_out) && flag) {
+ /* Peer made the request, don't tell the local user */
+ stcb->asoc.peer_req_out = 0;
+ return;
+ }
+ stcb->asoc.peer_req_out = 0;
+ m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA);
+ if (m_notify == NULL)
+ /* no space left */
+ return;
+ SCTP_BUF_LEN(m_notify) = 0;
+ stradd = mtod(m_notify, struct sctp_stream_change_event *);
+ memset(stradd, 0, sizeof(struct sctp_stream_change_event));
+ stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
+ stradd->strchange_flags = flag;
+ stradd->strchange_length = sizeof(struct sctp_stream_change_event);
+ stradd->strchange_assoc_id = sctp_get_associd(stcb);
+ stradd->strchange_instrms = numberin;
+ stradd->strchange_outstrms = numberout;
+ SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event);
+ SCTP_BUF_NEXT(m_notify) = NULL;
+ if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
+ /* no space */
+ sctp_m_freem(m_notify);
+ return;
+ }
+ /* append to socket */
+ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
+ 0, 0, stcb->asoc.context, 0, 0, 0,
+ m_notify);
+ if (control == NULL) {
+ /* no memory */
+ sctp_m_freem(m_notify);
+ return;
+ }
+ control->spec_flags = M_NOTIFICATION;
+ control->length = SCTP_BUF_LEN(m_notify);
+ /* not that we need this */
+ control->tail_mbuf = m_notify;
+ sctp_add_to_readq(stcb->sctp_ep, stcb,
+ control,
+ &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
+}
+
+void
+sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag)
+{
+ struct mbuf *m_notify;
+ struct sctp_queued_to_read *control;
+ struct sctp_assoc_reset_event *strasoc;
+
+ if ((stcb == NULL) ||
+ (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) {
+ /* event not enabled */
+ return;
+ }
+ m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA);
+ if (m_notify == NULL)
+ /* no space left */
+ return;
+ SCTP_BUF_LEN(m_notify) = 0;
+ strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
+ memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event));
+ strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
+ strasoc->assocreset_flags = flag;
+ strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event);
+ strasoc->assocreset_assoc_id= sctp_get_associd(stcb);
+ strasoc->assocreset_local_tsn = sending_tsn;
+ strasoc->assocreset_remote_tsn = recv_tsn;
+ SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event);
+ SCTP_BUF_NEXT(m_notify) = NULL;
+ if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
+ /* no space */
+ sctp_m_freem(m_notify);
+ return;
+ }
+ /* append to socket */
+ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
+ 0, 0, stcb->asoc.context, 0, 0, 0,
+ m_notify);
+ if (control == NULL) {
+ /* no memory */
+ sctp_m_freem(m_notify);
+ return;
+ }
+ control->spec_flags = M_NOTIFICATION;
+ control->length = SCTP_BUF_LEN(m_notify);
+ /* not that we need this */
+ control->tail_mbuf = m_notify;
+ sctp_add_to_readq(stcb->sctp_ep, stcb,
+ control,
+ &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
+}
+
+
+
+static void
+sctp_notify_stream_reset(struct sctp_tcb *stcb,
+ int number_entries, uint16_t * list, int flag)
+{
+ struct mbuf *m_notify;
+ struct sctp_queued_to_read *control;
+ struct sctp_stream_reset_event *strreset;
+ int len;
+
+ if ((stcb == NULL) ||
+ (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) {
+ /* event not enabled */
+ return;
+ }
+
+ m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
+ if (m_notify == NULL)
+ /* no space left */
+ return;
+ SCTP_BUF_LEN(m_notify) = 0;
+ len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
+ if (len > M_TRAILINGSPACE(m_notify)) {
+ /* never enough room */
+ sctp_m_freem(m_notify);
+ return;
+ }
+ strreset = mtod(m_notify, struct sctp_stream_reset_event *);
+ memset(strreset, 0, len);
+ strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
+ strreset->strreset_flags = flag;
+ strreset->strreset_length = len;
+ strreset->strreset_assoc_id = sctp_get_associd(stcb);
+ if (number_entries) {
+ int i;
+
+ for (i = 0; i < number_entries; i++) {
+ strreset->strreset_stream_list[i] = ntohs(list[i]);
+ }
+ }
+ SCTP_BUF_LEN(m_notify) = len;
+ SCTP_BUF_NEXT(m_notify) = NULL;
+ if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
+ /* no space */
+ sctp_m_freem(m_notify);
+ return;
+ }
+ /* append to socket */
+ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
+ 0, 0, stcb->asoc.context, 0, 0, 0,
+ m_notify);
+ if (control == NULL) {
+ /* no memory */
+ sctp_m_freem(m_notify);
+ return;
+ }
+ control->spec_flags = M_NOTIFICATION;
+ control->length = SCTP_BUF_LEN(m_notify);
+ /* not that we need this */
+ control->tail_mbuf = m_notify;
+ sctp_add_to_readq(stcb->sctp_ep, stcb,
+ control,
+ &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
+}
+
+
+static void
+sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk)
+{
+ struct mbuf *m_notify;
+ struct sctp_remote_error *sre;
+ struct sctp_queued_to_read *control;
+ unsigned int notif_len;
+ uint16_t chunk_len;
+
+ if ((stcb == NULL) ||
+ sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
+ return;
+ }
+ if (chunk != NULL) {
+ chunk_len = ntohs(chunk->ch.chunk_length);
+ } else {
+ chunk_len = 0;
+ }
+ notif_len = (unsigned int)(sizeof(struct sctp_remote_error) + chunk_len);
+ m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
+ if (m_notify == NULL) {
+ /* Retry with smaller value. */
+ notif_len = (unsigned int)sizeof(struct sctp_remote_error);
+ m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
+ if (m_notify == NULL) {
+ return;
+ }
+ }
+ SCTP_BUF_NEXT(m_notify) = NULL;
+ sre = mtod(m_notify, struct sctp_remote_error *);
+ memset(sre, 0, notif_len);
+ sre->sre_type = SCTP_REMOTE_ERROR;
+ sre->sre_flags = 0;
+ sre->sre_length = sizeof(struct sctp_remote_error);
+ sre->sre_error = error;
+ sre->sre_assoc_id = sctp_get_associd(stcb);
+ if (notif_len > sizeof(struct sctp_remote_error)) {
+ memcpy(sre->sre_data, chunk, chunk_len);
+ sre->sre_length += chunk_len;
+ }
+ SCTP_BUF_LEN(m_notify) = sre->sre_length;
+ control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
+ 0, 0, stcb->asoc.context, 0, 0, 0,
+ m_notify);
+ if (control != NULL) {
+ control->length = SCTP_BUF_LEN(m_notify);
+ /* not that we need this */
+ control->tail_mbuf = m_notify;
+ control->spec_flags = M_NOTIFICATION;
+ sctp_add_to_readq(stcb->sctp_ep, stcb,
+ control,
+ &stcb->sctp_socket->so_rcv, 1,
+ SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
+ } else {
+ sctp_m_freem(m_notify);
+ }
+}
+
+
+void
+sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
+ uint32_t error, void *data, int so_locked
+#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
+ SCTP_UNUSED
+#endif
+ )
+{
+ if ((stcb == NULL) ||
+ (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
+ (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
+ (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
+ /* If the socket is gone we are out of here */
+ return;
+ }
+#if (defined(__FreeBSD__) && __FreeBSD_version > 500000) || defined(__Windows__)
+ if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
+#else
+ if (stcb->sctp_socket->so_state & SS_CANTRCVMORE) {
+#endif
+ return;
+ }
+#if defined(__APPLE__)
+ if (so_locked) {
+ sctp_lock_assert(SCTP_INP_SO(stcb->sctp_ep));
+ } else {
+ sctp_unlock_assert(SCTP_INP_SO(stcb->sctp_ep));
+ }
+#endif
+ if ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) ||
+ (stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED)) {
+ if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
+ (notification == SCTP_NOTIFY_INTERFACE_UP) ||
+ (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
+ /* Don't report these in front states */
+ return;
+ }
+ }
+ switch (notification) {
+ case SCTP_NOTIFY_ASSOC_UP:
+ if (stcb->asoc.assoc_up_sent == 0) {
+ sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, 0, so_locked);
+ stcb->asoc.assoc_up_sent = 1;
+ }
+ if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
+ sctp_notify_adaptation_layer(stcb);
+ }
+ if (stcb->asoc.auth_supported == 0) {
+ sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
+ NULL, so_locked);
+ }
+ break;
+ case SCTP_NOTIFY_ASSOC_DOWN:
+ sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, 0, so_locked);
+#if defined(__Userspace__)
+ if (stcb->sctp_ep->recv_callback) {
+ if (stcb->sctp_socket) {
+ union sctp_sockstore addr;
+ struct sctp_rcvinfo rcv;
+
+ memset(&addr, 0, sizeof(union sctp_sockstore));
+ memset(&rcv, 0, sizeof(struct sctp_rcvinfo));
+ atomic_add_int(&stcb->asoc.refcnt, 1);
+ SCTP_TCB_UNLOCK(stcb);
+ stcb->sctp_ep->recv_callback(stcb->sctp_socket, addr, NULL, 0, rcv, 0, stcb->sctp_ep->ulp_info);
+ SCTP_TCB_LOCK(stcb);
+ atomic_subtract_int(&stcb->asoc.refcnt, 1);
+ }
+ }
+#endif
+ break;
+ case SCTP_NOTIFY_INTERFACE_DOWN:
+ {
+ struct sctp_nets *net;
+
+ net = (struct sctp_nets *)data;
+ sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
+ (struct sockaddr *)&net->ro._l_addr, error, so_locked);
+ break;
+ }
+ case SCTP_NOTIFY_INTERFACE_UP:
+ {
+ struct sctp_nets *net;
+
+ net = (struct sctp_nets *)data;
+ sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
+ (struct sockaddr *)&net->ro._l_addr, error, so_locked);
+ break;
+ }
+ case SCTP_NOTIFY_INTERFACE_CONFIRMED:
+ {
+ struct sctp_nets *net;
+
+ net = (struct sctp_nets *)data;
+ sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
+ (struct sockaddr *)&net->ro._l_addr, error, so_locked);
+ break;
+ }
+ case SCTP_NOTIFY_SPECIAL_SP_FAIL:
+ sctp_notify_send_failed2(stcb, error,
+ (struct sctp_stream_queue_pending *)data, so_locked);
+ break;
+ case SCTP_NOTIFY_SENT_DG_FAIL:
+ sctp_notify_send_failed(stcb, 1, error,
+ (struct sctp_tmit_chunk *)data, so_locked);
+ break;
+ case SCTP_NOTIFY_UNSENT_DG_FAIL:
+ sctp_notify_send_failed(stcb, 0, error,
+ (struct sctp_tmit_chunk *)data, so_locked);
+ break;
+ case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
+ {
+ uint32_t val;
+ val = *((uint32_t *)data);
+
+ sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
+ break;
+ }
+ case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
+ if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
+ ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
+ sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 0, so_locked);
+ } else {
+ sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked);
+ }
+ break;
+ case SCTP_NOTIFY_ASSOC_REM_ABORTED:
+ if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
+ ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
+ sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 1, so_locked);
+ } else {
+ sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked);
+ }
+ break;
+ case SCTP_NOTIFY_ASSOC_RESTART:
+ sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked);
+ if (stcb->asoc.auth_supported == 0) {
+ sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
+ NULL, so_locked);
+ }
+ break;
+ case SCTP_NOTIFY_STR_RESET_SEND:
+ sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_OUTGOING_SSN);
+ break;
+ case SCTP_NOTIFY_STR_RESET_RECV:
+ sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_INCOMING);
+ break;
+ case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
+ sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
+ (SCTP_STREAM_RESET_OUTGOING_SSN|SCTP_STREAM_RESET_FAILED));
+ break;
+ case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
+ sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
+ (SCTP_STREAM_RESET_OUTGOING_SSN|SCTP_STREAM_RESET_DENIED));
+ break;
+ case SCTP_NOTIFY_STR_RESET_FAILED_IN:
+ sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
+ (SCTP_STREAM_RESET_INCOMING|SCTP_STREAM_RESET_FAILED));
+ break;
+ case SCTP_NOTIFY_STR_RESET_DENIED_IN:
+ sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
+ (SCTP_STREAM_RESET_INCOMING|SCTP_STREAM_RESET_DENIED));
+ break;
+ case SCTP_NOTIFY_ASCONF_ADD_IP:
+ sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
+ error, so_locked);
+ break;
+ case SCTP_NOTIFY_ASCONF_DELETE_IP:
+ sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
+ error, so_locked);
+ break;
+ case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
+ sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
+ error, so_locked);
+ break;
+ case SCTP_NOTIFY_PEER_SHUTDOWN:
+ sctp_notify_shutdown_event(stcb);
+ break;
+ case SCTP_NOTIFY_AUTH_NEW_KEY:
+ sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error,
+ (uint16_t)(uintptr_t)data,
+ so_locked);
+ break;
+ case SCTP_NOTIFY_AUTH_FREE_KEY:
+ sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
+ (uint16_t)(uintptr_t)data,
+ so_locked);
+ break;
+ case SCTP_NOTIFY_NO_PEER_AUTH:
+ sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
+ (uint16_t)(uintptr_t)data,
+ so_locked);
+ break;
+ case SCTP_NOTIFY_SENDER_DRY:
+ sctp_notify_sender_dry_event(stcb, so_locked);
+ break;
+ case SCTP_NOTIFY_REMOTE_ERROR:
+ sctp_notify_remote_error(stcb, error, data);
+ break;
+ default:
+ SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
+ __func__, notification, notification);
+ break;
+ } /* end switch */
+}
+
+void
+sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int holds_lock, int so_locked
+#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
+ SCTP_UNUSED
+#endif
+ )
+{
+ struct sctp_association *asoc;
+ struct sctp_stream_out *outs;
+ struct sctp_tmit_chunk *chk, *nchk;
+ struct sctp_stream_queue_pending *sp, *nsp;
+ int i;
+
+ if (stcb == NULL) {
+ return;
+ }
+ asoc = &stcb->asoc;
+ if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
+ /* already being freed */
+ return;
+ }
+#if defined(__APPLE__)
+ if (so_locked) {
+ sctp_lock_assert(SCTP_INP_SO(stcb->sctp_ep));
+ } else {
+ sctp_unlock_assert(SCTP_INP_SO(stcb->sctp_ep));
+ }
+#endif
+ if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
+ (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
+ (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
+ return;
+ }
+ /* now through all the gunk freeing chunks */
+ if (holds_lock == 0) {
+ SCTP_TCB_SEND_LOCK(stcb);
+ }
+ /* sent queue SHOULD be empty */
+ TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
+ TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
+ asoc->sent_queue_cnt--;
+ if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
+ if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
+ asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
+#ifdef INVARIANTS
+ } else {
+ panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
+#endif
+ }
+ }
+ if (chk->data != NULL) {
+ sctp_free_bufspace(stcb, asoc, chk, 1);
+ sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
+ error, chk, so_locked);
+ if (chk->data) {
+ sctp_m_freem(chk->data);
+ chk->data = NULL;
+ }
+ }
+ sctp_free_a_chunk(stcb, chk, so_locked);
+ /*sa_ignore FREED_MEMORY*/
+ }
+ /* pending send queue SHOULD be empty */
+ TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
+ TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
+ asoc->send_queue_cnt--;
+ if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
+ asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
+#ifdef INVARIANTS
+ } else {
+ panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
+#endif
+ }
+ if (chk->data != NULL) {
+ sctp_free_bufspace(stcb, asoc, chk, 1);
+ sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
+ error, chk, so_locked);
+ if (chk->data) {
+ sctp_m_freem(chk->data);
+ chk->data = NULL;
+ }
+ }
+ sctp_free_a_chunk(stcb, chk, so_locked);
+ /*sa_ignore FREED_MEMORY*/
+ }
+ for (i = 0; i < asoc->streamoutcnt; i++) {
+ /* For each stream */
+ outs = &asoc->strmout[i];
+ /* clean up any sends there */
+ TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
+ atomic_subtract_int(&asoc->stream_queue_cnt, 1);
+ TAILQ_REMOVE(&outs->outqueue, sp, next);
+ stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp, holds_lock);
+ sctp_free_spbufspace(stcb, asoc, sp);
+ if (sp->data) {
+ sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
+ error, (void *)sp, so_locked);
+ if (sp->data) {
+ sctp_m_freem(sp->data);
+ sp->data = NULL;
+ sp->tail_mbuf = NULL;
+ sp->length = 0;
+ }
+ }
+ if (sp->net) {
+ sctp_free_remote_addr(sp->net);
+ sp->net = NULL;
+ }
+ /* Free the chunk */
+ sctp_free_a_strmoq(stcb, sp, so_locked);
+ /*sa_ignore FREED_MEMORY*/
+ }
+ }
+
+ if (holds_lock == 0) {
+ SCTP_TCB_SEND_UNLOCK(stcb);
+ }
+}
+
+void
+sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error,
+ struct sctp_abort_chunk *abort, int so_locked
+#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
+ SCTP_UNUSED
+#endif
+ )
+{
+ if (stcb == NULL) {
+ return;
+ }
+#if defined(__APPLE__)
+ if (so_locked) {
+ sctp_lock_assert(SCTP_INP_SO(stcb->sctp_ep));
+ } else {
+ sctp_unlock_assert(SCTP_INP_SO(stcb->sctp_ep));
+ }
+#endif
+ if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
+ ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
+ (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
+ stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
+ }
+ if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
+ (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
+ (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
+ return;
+ }
+ /* Tell them we lost the asoc */
+ sctp_report_all_outbound(stcb, error, 1, so_locked);
+ if (from_peer) {
+ sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
+ } else {
+ sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
+ }
+}
+
+void
+sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
+ struct mbuf *m, int iphlen,
+ struct sockaddr *src, struct sockaddr *dst,
+ struct sctphdr *sh, struct mbuf *op_err,
+#if defined(__FreeBSD__)
+ uint8_t mflowtype, uint32_t mflowid,
+#endif
+ uint32_t vrf_id, uint16_t port)
+{
+ uint32_t vtag;
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ struct socket *so;
+#endif
+
+ vtag = 0;
+ if (stcb != NULL) {
+ vtag = stcb->asoc.peer_vtag;
+ vrf_id = stcb->asoc.vrf_id;
+ }
+ sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err,
+#if defined(__FreeBSD__)
+ mflowtype, mflowid, inp->fibnum,
+#endif
+ vrf_id, port);
+ if (stcb != NULL) {
+ /* We have a TCB to abort, send notification too */
+ sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED);
+ stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
+ /* Ok, now lets free it */
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ so = SCTP_INP_SO(inp);
+ atomic_add_int(&stcb->asoc.refcnt, 1);
+ SCTP_TCB_UNLOCK(stcb);
+ SCTP_SOCKET_LOCK(so, 1);
+ SCTP_TCB_LOCK(stcb);
+ atomic_subtract_int(&stcb->asoc.refcnt, 1);
+#endif
+ SCTP_STAT_INCR_COUNTER32(sctps_aborted);
+ if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
+ (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
+ SCTP_STAT_DECR_GAUGE32(sctps_currestab);
+ }
+ (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
+ SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ SCTP_SOCKET_UNLOCK(so, 1);
+#endif
+ }
+}
+#ifdef SCTP_ASOCLOG_OF_TSNS
+void
+sctp_print_out_track_log(struct sctp_tcb *stcb)
+{
+#ifdef NOSIY_PRINTS
+ int i;
+ SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
+ SCTP_PRINTF("IN bound TSN log-aaa\n");
+ if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
+ SCTP_PRINTF("None rcvd\n");
+ goto none_in;
+ }
+ if (stcb->asoc.tsn_in_wrapped) {
+ for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
+ SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
+ stcb->asoc.in_tsnlog[i].tsn,
+ stcb->asoc.in_tsnlog[i].strm,
+ stcb->asoc.in_tsnlog[i].seq,
+ stcb->asoc.in_tsnlog[i].flgs,
+ stcb->asoc.in_tsnlog[i].sz);
+ }
+ }
+ if (stcb->asoc.tsn_in_at) {
+ for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
+ SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
+ stcb->asoc.in_tsnlog[i].tsn,
+ stcb->asoc.in_tsnlog[i].strm,
+ stcb->asoc.in_tsnlog[i].seq,
+ stcb->asoc.in_tsnlog[i].flgs,
+ stcb->asoc.in_tsnlog[i].sz);
+ }
+ }
+ none_in:
+ SCTP_PRINTF("OUT bound TSN log-aaa\n");
+ if ((stcb->asoc.tsn_out_at == 0) &&
+ (stcb->asoc.tsn_out_wrapped == 0)) {
+ SCTP_PRINTF("None sent\n");
+ }
+ if (stcb->asoc.tsn_out_wrapped) {
+ for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
+ SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
+ stcb->asoc.out_tsnlog[i].tsn,
+ stcb->asoc.out_tsnlog[i].strm,
+ stcb->asoc.out_tsnlog[i].seq,
+ stcb->asoc.out_tsnlog[i].flgs,
+ stcb->asoc.out_tsnlog[i].sz);
+ }
+ }
+ if (stcb->asoc.tsn_out_at) {
+ for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
+ SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
+ stcb->asoc.out_tsnlog[i].tsn,
+ stcb->asoc.out_tsnlog[i].strm,
+ stcb->asoc.out_tsnlog[i].seq,
+ stcb->asoc.out_tsnlog[i].flgs,
+ stcb->asoc.out_tsnlog[i].sz);
+ }
+ }
+#endif
+}
+#endif
+
+void
+sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
+ struct mbuf *op_err,
+ int so_locked
+#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
+ SCTP_UNUSED
+#endif
+)
+{
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ struct socket *so;
+#endif
+
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ so = SCTP_INP_SO(inp);
+#endif
+#if defined(__APPLE__)
+ if (so_locked) {
+ sctp_lock_assert(SCTP_INP_SO(inp));
+ } else {
+ sctp_unlock_assert(SCTP_INP_SO(inp));
+ }
+#endif
+ if (stcb == NULL) {
+ /* Got to have a TCB */
+ if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
+ if (LIST_EMPTY(&inp->sctp_asoc_list)) {
+#if defined(__APPLE__)
+ if (!so_locked) {
+ SCTP_SOCKET_LOCK(so, 1);
+ }
+#endif
+ sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
+ SCTP_CALLED_DIRECTLY_NOCMPSET);
+#if defined(__APPLE__)
+ if (!so_locked) {
+ SCTP_SOCKET_UNLOCK(so, 1);
+ }
+#endif
+ }
+ }
+ return;
+ } else {
+ stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
+ }
+ /* notify the peer */
+ sctp_send_abort_tcb(stcb, op_err, so_locked);
+ SCTP_STAT_INCR_COUNTER32(sctps_aborted);
+ if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
+ (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
+ SCTP_STAT_DECR_GAUGE32(sctps_currestab);
+ }
+ /* notify the ulp */
+ if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
+ sctp_abort_notification(stcb, 0, 0, NULL, so_locked);
+ }
+ /* now free the asoc */
+#ifdef SCTP_ASOCLOG_OF_TSNS
+ sctp_print_out_track_log(stcb);
+#endif
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ if (!so_locked) {
+ atomic_add_int(&stcb->asoc.refcnt, 1);
+ SCTP_TCB_UNLOCK(stcb);
+ SCTP_SOCKET_LOCK(so, 1);
+ SCTP_TCB_LOCK(stcb);
+ atomic_subtract_int(&stcb->asoc.refcnt, 1);
+ }
+#endif
+ (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
+ SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ if (!so_locked) {
+ SCTP_SOCKET_UNLOCK(so, 1);
+ }
+#endif
+}
+
+void
+sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
+ struct sockaddr *src, struct sockaddr *dst,
+ struct sctphdr *sh, struct sctp_inpcb *inp,
+ struct mbuf *cause,
+#if defined(__FreeBSD__)
+ uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum,
+#endif
+ uint32_t vrf_id, uint16_t port)
+{
+ struct sctp_chunkhdr *ch, chunk_buf;
+ unsigned int chk_length;
+ int contains_init_chunk;
+
+ SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
+ /* Generate a TO address for future reference */
+ if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
+ if (LIST_EMPTY(&inp->sctp_asoc_list)) {
+#if defined(__APPLE__)
+ SCTP_SOCKET_LOCK(SCTP_INP_SO(inp), 1);
+#endif
+ sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
+ SCTP_CALLED_DIRECTLY_NOCMPSET);
+#if defined(__APPLE__)
+ SCTP_SOCKET_UNLOCK(SCTP_INP_SO(inp), 1);
+#endif
+ }
+ }
+ contains_init_chunk = 0;
+ ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
+ sizeof(*ch), (uint8_t *) & chunk_buf);
+ while (ch != NULL) {
+ chk_length = ntohs(ch->chunk_length);
+ if (chk_length < sizeof(*ch)) {
+ /* break to abort land */
+ break;
+ }
+ switch (ch->chunk_type) {
+ case SCTP_INIT:
+ contains_init_chunk = 1;
+ break;
+ case SCTP_PACKET_DROPPED:
+ /* we don't respond to pkt-dropped */
+ return;
+ case SCTP_ABORT_ASSOCIATION:
+ /* we don't respond with an ABORT to an ABORT */
+ return;
+ case SCTP_SHUTDOWN_COMPLETE:
+ /*
+ * we ignore it since we are not waiting for it and
+ * peer is gone
+ */
+ return;
+ case SCTP_SHUTDOWN_ACK:
+ sctp_send_shutdown_complete2(src, dst, sh,
+#if defined(__FreeBSD__)
+ mflowtype, mflowid, fibnum,
+#endif
+ vrf_id, port);
+ return;
+ default:
+ break;
+ }
+ offset += SCTP_SIZE32(chk_length);
+ ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
+ sizeof(*ch), (uint8_t *) & chunk_buf);
+ }
+ if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
+ ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
+ (contains_init_chunk == 0))) {
+ sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
+#if defined(__FreeBSD__)
+ mflowtype, mflowid, fibnum,
+#endif
+ vrf_id, port);
+ }
+}
+
+/*
+ * check the inbound datagram to make sure there is not an abort inside it,
+ * if there is return 1, else return 0.
+ */
+int
+sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t * vtagfill)
+{
+ struct sctp_chunkhdr *ch;
+ struct sctp_init_chunk *init_chk, chunk_buf;
+ int offset;
+ unsigned int chk_length;
+
+ offset = iphlen + sizeof(struct sctphdr);
+ ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
+ (uint8_t *) & chunk_buf);
+ while (ch != NULL) {
+ chk_length = ntohs(ch->chunk_length);
+ if (chk_length < sizeof(*ch)) {
+ /* packet is probably corrupt */
+ break;
+ }
+ /* we seem to be ok, is it an abort? */
+ if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
+ /* yep, tell them */
+ return (1);
+ }
+ if (ch->chunk_type == SCTP_INITIATION) {
+ /* need to update the Vtag */
+ init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
+ offset, sizeof(*init_chk), (uint8_t *) & chunk_buf);
+ if (init_chk != NULL) {
+ *vtagfill = ntohl(init_chk->init.initiate_tag);
+ }
+ }
+ /* Nope, move to the next chunk */
+ offset += SCTP_SIZE32(chk_length);
+ ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
+ sizeof(*ch), (uint8_t *) & chunk_buf);
+ }
+ return (0);
+}
+
+/*
+ * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
+ * set (i.e. it's 0) so, create this function to compare link local scopes
+ */
+#ifdef INET6
+uint32_t
+sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
+{
+#if defined(__Userspace__)
+ /*__Userspace__ Returning 1 here always */
+#endif
+#if defined(SCTP_EMBEDDED_V6_SCOPE)
+ struct sockaddr_in6 a, b;
+
+ /* save copies */
+ a = *addr1;
+ b = *addr2;
+
+ if (a.sin6_scope_id == 0)
+#ifdef SCTP_KAME
+ if (sa6_recoverscope(&a)) {
+#else
+ if (in6_recoverscope(&a, &a.sin6_addr, NULL)) {
+#endif /* SCTP_KAME */
+ /* can't get scope, so can't match */
+ return (0);
+ }
+ if (b.sin6_scope_id == 0)
+#ifdef SCTP_KAME
+ if (sa6_recoverscope(&b)) {
+#else
+ if (in6_recoverscope(&b, &b.sin6_addr, NULL)) {
+#endif /* SCTP_KAME */
+ /* can't get scope, so can't match */
+ return (0);
+ }
+ if (a.sin6_scope_id != b.sin6_scope_id)
+ return (0);
+#else
+ if (addr1->sin6_scope_id != addr2->sin6_scope_id)
+ return (0);
+#endif /* SCTP_EMBEDDED_V6_SCOPE */
+
+ return (1);
+}
+
+#if defined(SCTP_EMBEDDED_V6_SCOPE)
+/*
+ * returns a sockaddr_in6 with embedded scope recovered and removed
+ */
+struct sockaddr_in6 *
+sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
+{
+ /* check and strip embedded scope junk */
+ if (addr->sin6_family == AF_INET6) {
+ if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
+ if (addr->sin6_scope_id == 0) {
+ *store = *addr;
+#ifdef SCTP_KAME
+ if (!sa6_recoverscope(store)) {
+#else
+ if (!in6_recoverscope(store, &store->sin6_addr,
+ NULL)) {
+#endif /* SCTP_KAME */
+ /* use the recovered scope */
+ addr = store;
+ }
+ } else {
+ /* else, return the original "to" addr */
+ in6_clearscope(&addr->sin6_addr);
+ }
+ }
+ }
+ return (addr);
+}
+#endif /* SCTP_EMBEDDED_V6_SCOPE */
+#endif
+
+/*
+ * are the two addresses the same? currently a "scopeless" check returns: 1
+ * if same, 0 if not
+ */
+int
+sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
+{
+
+ /* must be valid */
+ if (sa1 == NULL || sa2 == NULL)
+ return (0);
+
+ /* must be the same family */
+ if (sa1->sa_family != sa2->sa_family)
+ return (0);
+
+ switch (sa1->sa_family) {
+#ifdef INET6
+ case AF_INET6:
+ {
+ /* IPv6 addresses */
+ struct sockaddr_in6 *sin6_1, *sin6_2;
+
+ sin6_1 = (struct sockaddr_in6 *)sa1;
+ sin6_2 = (struct sockaddr_in6 *)sa2;
+ return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
+ sin6_2));
+ }
+#endif
+#ifdef INET
+ case AF_INET:
+ {
+ /* IPv4 addresses */
+ struct sockaddr_in *sin_1, *sin_2;
+
+ sin_1 = (struct sockaddr_in *)sa1;
+ sin_2 = (struct sockaddr_in *)sa2;
+ return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
+ }
+#endif
+#if defined(__Userspace__)
+ case AF_CONN:
+ {
+ struct sockaddr_conn *sconn_1, *sconn_2;
+
+ sconn_1 = (struct sockaddr_conn *)sa1;
+ sconn_2 = (struct sockaddr_conn *)sa2;
+ return (sconn_1->sconn_addr == sconn_2->sconn_addr);
+ }
+#endif
+ default:
+ /* we don't do these... */
+ return (0);
+ }
+}
+
+void
+sctp_print_address(struct sockaddr *sa)
+{
+#ifdef INET6
+#if defined(__FreeBSD__) && __FreeBSD_version >= 700000
+ char ip6buf[INET6_ADDRSTRLEN];
+#endif
+#endif
+
+ switch (sa->sa_family) {
+#ifdef INET6
+ case AF_INET6:
+ {
+ struct sockaddr_in6 *sin6;
+
+ sin6 = (struct sockaddr_in6 *)sa;
+#if defined(__Userspace__)
+ SCTP_PRINTF("IPv6 address: %x:%x:%x:%x:%x:%x:%x:%x:port:%d scope:%u\n",
+ ntohs(sin6->sin6_addr.s6_addr16[0]),
+ ntohs(sin6->sin6_addr.s6_addr16[1]),
+ ntohs(sin6->sin6_addr.s6_addr16[2]),
+ ntohs(sin6->sin6_addr.s6_addr16[3]),
+ ntohs(sin6->sin6_addr.s6_addr16[4]),
+ ntohs(sin6->sin6_addr.s6_addr16[5]),
+ ntohs(sin6->sin6_addr.s6_addr16[6]),
+ ntohs(sin6->sin6_addr.s6_addr16[7]),
+ ntohs(sin6->sin6_port),
+ sin6->sin6_scope_id);
+#else
+#if defined(__FreeBSD__) && __FreeBSD_version >= 700000
+ SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
+ ip6_sprintf(ip6buf, &sin6->sin6_addr),
+ ntohs(sin6->sin6_port),
+ sin6->sin6_scope_id);
+#else
+ SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
+ ip6_sprintf(&sin6->sin6_addr),
+ ntohs(sin6->sin6_port),
+ sin6->sin6_scope_id);
+#endif
+#endif
+ break;
+ }
+#endif
+#ifdef INET
+ case AF_INET:
+ {
+ struct sockaddr_in *sin;
+ unsigned char *p;
+
+ sin = (struct sockaddr_in *)sa;
+ p = (unsigned char *)&sin->sin_addr;
+ SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
+ p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
+ break;
+ }
+#endif
+#if defined(__Userspace__)
+ case AF_CONN:
+ {
+ struct sockaddr_conn *sconn;
+
+ sconn = (struct sockaddr_conn *)sa;
+ SCTP_PRINTF("AF_CONN address: %p\n", sconn->sconn_addr);
+ break;
+ }
+#endif
+ default:
+ SCTP_PRINTF("?\n");
+ break;
+ }
+}
+
+void
+sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
+ struct sctp_inpcb *new_inp,
+ struct sctp_tcb *stcb,
+ int waitflags)
+{
+ /*
+ * go through our old INP and pull off any control structures that
+ * belong to stcb and move then to the new inp.
+ */
+ struct socket *old_so, *new_so;
+ struct sctp_queued_to_read *control, *nctl;
+ struct sctp_readhead tmp_queue;
+ struct mbuf *m;
+ int error = 0;
+
+ old_so = old_inp->sctp_socket;
+ new_so = new_inp->sctp_socket;
+ TAILQ_INIT(&tmp_queue);
+#if defined(__FreeBSD__) && __FreeBSD_version < 700000
+ SOCKBUF_LOCK(&(old_so->so_rcv));
+#endif
+#if defined(__FreeBSD__) || defined(__APPLE__)
+ error = sblock(&old_so->so_rcv, waitflags);
+#endif
+#if defined(__FreeBSD__) && __FreeBSD_version < 700000
+ SOCKBUF_UNLOCK(&(old_so->so_rcv));
+#endif
+ if (error) {
+ /* Gak, can't get sblock, we have a problem.
+ * data will be left stranded.. and we
+ * don't dare look at it since the
+ * other thread may be reading something.
+ * Oh well, its a screwed up app that does
+ * a peeloff OR a accept while reading
+ * from the main socket... actually its
+ * only the peeloff() case, since I think
+ * read will fail on a listening socket..
+ */
+ return;
+ }
+ /* lock the socket buffers */
+ SCTP_INP_READ_LOCK(old_inp);
+ TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
+ /* Pull off all for out target stcb */
+ if (control->stcb == stcb) {
+ /* remove it we want it */
+ TAILQ_REMOVE(&old_inp->read_queue, control, next);
+ TAILQ_INSERT_TAIL(&tmp_queue, control, next);
+ m = control->data;
+ while (m) {
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
+ sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb?NULL:stcb, SCTP_LOG_SBFREE,SCTP_BUF_LEN(m));
+ }
+ sctp_sbfree(control, stcb, &old_so->so_rcv, m);
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
+ sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb?NULL:stcb, SCTP_LOG_SBRESULT, 0);
+ }
+ m = SCTP_BUF_NEXT(m);
+ }
+ }
+ }
+ SCTP_INP_READ_UNLOCK(old_inp);
+ /* Remove the sb-lock on the old socket */
+#if defined(__FreeBSD__) && __FreeBSD_version < 700000
+ SOCKBUF_LOCK(&(old_so->so_rcv));
+#endif
+#if defined(__APPLE__)
+ sbunlock(&old_so->so_rcv, 1);
+#endif
+
+#if defined(__FreeBSD__)
+ sbunlock(&old_so->so_rcv);
+#endif
+#if defined(__FreeBSD__) && __FreeBSD_version < 700000
+ SOCKBUF_UNLOCK(&(old_so->so_rcv));
+#endif
+ /* Now we move them over to the new socket buffer */
+ SCTP_INP_READ_LOCK(new_inp);
+ TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
+ TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
+ m = control->data;
+ while (m) {
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
+ sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb?NULL:stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
+ }
+ sctp_sballoc(stcb, &new_so->so_rcv, m);
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
+ sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb?NULL:stcb, SCTP_LOG_SBRESULT, 0);
+ }
+ m = SCTP_BUF_NEXT(m);
+ }
+ }
+ SCTP_INP_READ_UNLOCK(new_inp);
+}
+
+void
+sctp_wakeup_the_read_socket(struct sctp_inpcb *inp,
+ struct sctp_tcb *stcb,
+ int so_locked
+#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
+ SCTP_UNUSED
+#endif
+)
+{
+ if ((inp != NULL) && (inp->sctp_socket != NULL)) {
+ if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
+ SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
+ } else {
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ struct socket *so;
+
+ so = SCTP_INP_SO(inp);
+ if (!so_locked) {
+ if (stcb) {
+ atomic_add_int(&stcb->asoc.refcnt, 1);
+ SCTP_TCB_UNLOCK(stcb);
+ }
+ SCTP_SOCKET_LOCK(so, 1);
+ if (stcb) {
+ SCTP_TCB_LOCK(stcb);
+ atomic_subtract_int(&stcb->asoc.refcnt, 1);
+ }
+ if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
+ SCTP_SOCKET_UNLOCK(so, 1);
+ return;
+ }
+ }
+#endif
+ sctp_sorwakeup(inp, inp->sctp_socket);
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ if (!so_locked) {
+ SCTP_SOCKET_UNLOCK(so, 1);
+ }
+#endif
+ }
+ }
+}
+#if defined(__Userspace__)
+
+void
+sctp_invoke_recv_callback(struct sctp_inpcb *inp,
+ struct sctp_tcb *stcb,
+ struct sctp_queued_to_read *control,
+ int inp_read_lock_held)
+{
+ uint32_t pd_point, length;
+
+ if ((inp->recv_callback == NULL) ||
+ (stcb == NULL) ||
+ (stcb->sctp_socket == NULL)) {
+ return;
+ }
+
+ length = control->length;
+ if (stcb != NULL && stcb->sctp_socket != NULL) {
+ pd_point = min(SCTP_SB_LIMIT_RCV(stcb->sctp_socket) >> SCTP_PARTIAL_DELIVERY_SHIFT,
+ stcb->sctp_ep->partial_delivery_point);
+ } else {
+ pd_point = inp->partial_delivery_point;
+ }
+ if ((control->end_added == 1) || (length >= pd_point)) {
+ struct socket *so;
+ struct mbuf *m;
+ char *buffer;
+ struct sctp_rcvinfo rcv;
+ union sctp_sockstore addr;
+ int flags;
+
+ if ((buffer = malloc(length)) == NULL) {
+ return;
+ }
+ if (inp_read_lock_held == 0) {
+ SCTP_INP_READ_LOCK(inp);
+ }
+ so = stcb->sctp_socket;
+ for (m = control->data; m; m = SCTP_BUF_NEXT(m)) {
+ sctp_sbfree(control, control->stcb, &so->so_rcv, m);
+ }
+ m_copydata(control->data, 0, length, buffer);
+ memset(&rcv, 0, sizeof(struct sctp_rcvinfo));
+ rcv.rcv_sid = control->sinfo_stream;
+ rcv.rcv_ssn = (uint16_t)control->mid;
+ rcv.rcv_flags = control->sinfo_flags;
+ rcv.rcv_ppid = control->sinfo_ppid;
+ rcv.rcv_tsn = control->sinfo_tsn;
+ rcv.rcv_cumtsn = control->sinfo_cumtsn;
+ rcv.rcv_context = control->sinfo_context;
+ rcv.rcv_assoc_id = control->sinfo_assoc_id;
+ memset(&addr, 0, sizeof(union sctp_sockstore));
+ switch (control->whoFrom->ro._l_addr.sa.sa_family) {
+#ifdef INET
+ case AF_INET:
+ addr.sin = control->whoFrom->ro._l_addr.sin;
+ break;
+#endif
+#ifdef INET6
+ case AF_INET6:
+ addr.sin6 = control->whoFrom->ro._l_addr.sin6;
+ break;
+#endif
+ case AF_CONN:
+ addr.sconn = control->whoFrom->ro._l_addr.sconn;
+ break;
+ default:
+ addr.sa = control->whoFrom->ro._l_addr.sa;
+ break;
+ }
+ flags = 0;
+ if (control->end_added == 1) {
+ flags |= MSG_EOR;
+ }
+ if (control->spec_flags & M_NOTIFICATION) {
+ flags |= MSG_NOTIFICATION;
+ }
+ sctp_m_freem(control->data);
+ control->data = NULL;
+ control->tail_mbuf = NULL;
+ control->length = 0;
+ if (control->end_added) {
+ TAILQ_REMOVE(&stcb->sctp_ep->read_queue, control, next);
+ control->on_read_q = 0;
+ sctp_free_remote_addr(control->whoFrom);
+ control->whoFrom = NULL;
+ sctp_free_a_readq(stcb, control);
+ }
+ atomic_add_int(&stcb->asoc.refcnt, 1);
+ SCTP_TCB_UNLOCK(stcb);
+ if (inp_read_lock_held == 0) {
+ SCTP_INP_READ_UNLOCK(inp);
+ }
+ inp->recv_callback(so, addr, buffer, length, rcv, flags, inp->ulp_info);
+ SCTP_TCB_LOCK(stcb);
+ atomic_subtract_int(&stcb->asoc.refcnt, 1);
+ }
+}
+#endif
+
+void
+sctp_add_to_readq(struct sctp_inpcb *inp,
+ struct sctp_tcb *stcb,
+ struct sctp_queued_to_read *control,
+ struct sockbuf *sb,
+ int end,
+ int inp_read_lock_held,
+ int so_locked
+#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
+ SCTP_UNUSED
+#endif
+ )
+{
+ /*
+ * Here we must place the control on the end of the socket read
+ * queue AND increment sb_cc so that select will work properly on
+ * read.
+ */
+ struct mbuf *m, *prev = NULL;
+
+ if (inp == NULL) {
+ /* Gak, TSNH!! */
+#ifdef INVARIANTS
+ panic("Gak, inp NULL on add_to_readq");
+#endif
+ return;
+ }
+#if defined(__APPLE__)
+ if (so_locked) {
+ sctp_lock_assert(SCTP_INP_SO(inp));
+ } else {
+ sctp_unlock_assert(SCTP_INP_SO(inp));
+ }
+#endif
+ if (inp_read_lock_held == 0)
+ SCTP_INP_READ_LOCK(inp);
+ if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
+ sctp_free_remote_addr(control->whoFrom);
+ if (control->data) {
+ sctp_m_freem(control->data);
+ control->data = NULL;
+ }
+ sctp_free_a_readq(stcb, control);
+ if (inp_read_lock_held == 0)
+ SCTP_INP_READ_UNLOCK(inp);
+ return;
+ }
+ if (!(control->spec_flags & M_NOTIFICATION)) {
+ atomic_add_int(&inp->total_recvs, 1);
+ if (!control->do_not_ref_stcb) {
+ atomic_add_int(&stcb->total_recvs, 1);
+ }
+ }
+ m = control->data;
+ control->held_length = 0;
+ control->length = 0;
+ while (m) {
+ if (SCTP_BUF_LEN(m) == 0) {
+ /* Skip mbufs with NO length */
+ if (prev == NULL) {
+ /* First one */
+ control->data = sctp_m_free(m);
+ m = control->data;
+ } else {
+ SCTP_BUF_NEXT(prev) = sctp_m_free(m);
+ m = SCTP_BUF_NEXT(prev);
+ }
+ if (m == NULL) {
+ control->tail_mbuf = prev;
+ }
+ continue;
+ }
+ prev = m;
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
+ sctp_sblog(sb, control->do_not_ref_stcb?NULL:stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
+ }
+ sctp_sballoc(stcb, sb, m);
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
+ sctp_sblog(sb, control->do_not_ref_stcb?NULL:stcb, SCTP_LOG_SBRESULT, 0);
+ }
+ atomic_add_int(&control->length, SCTP_BUF_LEN(m));
+ m = SCTP_BUF_NEXT(m);
+ }
+ if (prev != NULL) {
+ control->tail_mbuf = prev;
+ } else {
+ /* Everything got collapsed out?? */
+ sctp_free_remote_addr(control->whoFrom);
+ sctp_free_a_readq(stcb, control);
+ if (inp_read_lock_held == 0)
+ SCTP_INP_READ_UNLOCK(inp);
+ return;
+ }
+ if (end) {
+ control->end_added = 1;
+ }
+ TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
+ control->on_read_q = 1;
+ if (inp_read_lock_held == 0)
+ SCTP_INP_READ_UNLOCK(inp);
+#if defined(__Userspace__)
+ sctp_invoke_recv_callback(inp, stcb, control, inp_read_lock_held);
+#endif
+ if (inp && inp->sctp_socket) {
+ sctp_wakeup_the_read_socket(inp, stcb, so_locked);
+ }
+}
+
+/*************HOLD THIS COMMENT FOR PATCH FILE OF
+ *************ALTERNATE ROUTING CODE
+ */
+
+/*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
+ *************ALTERNATE ROUTING CODE
+ */
+
+struct mbuf *
+sctp_generate_cause(uint16_t code, char *info)
+{
+ struct mbuf *m;
+ struct sctp_gen_error_cause *cause;
+ size_t info_len;
+ uint16_t len;
+
+ if ((code == 0) || (info == NULL)) {
+ return (NULL);
+ }
+ info_len = strlen(info);
+ if (info_len > (SCTP_MAX_CAUSE_LENGTH - sizeof(struct sctp_paramhdr))) {
+ return (NULL);
+ }
+ len = (uint16_t)(sizeof(struct sctp_paramhdr) + info_len);
+ m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
+ if (m != NULL) {
+ SCTP_BUF_LEN(m) = len;
+ cause = mtod(m, struct sctp_gen_error_cause *);
+ cause->code = htons(code);
+ cause->length = htons(len);
+ memcpy(cause->info, info, info_len);
+ }
+ return (m);
+}
+
+struct mbuf *
+sctp_generate_no_user_data_cause(uint32_t tsn)
+{
+ struct mbuf *m;
+ struct sctp_error_no_user_data *no_user_data_cause;
+ uint16_t len;
+
+ len = (uint16_t)sizeof(struct sctp_error_no_user_data);
+ m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
+ if (m != NULL) {
+ SCTP_BUF_LEN(m) = len;
+ no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
+ no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
+ no_user_data_cause->cause.length = htons(len);
+ no_user_data_cause->tsn = htonl(tsn);
+ }
+ return (m);
+}
+
+#ifdef SCTP_MBCNT_LOGGING
+void
+sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
+ struct sctp_tmit_chunk *tp1, int chk_cnt)
+{
+ if (tp1->data == NULL) {
+ return;
+ }
+ asoc->chunks_on_out_queue -= chk_cnt;
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
+ sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
+ asoc->total_output_queue_size,
+ tp1->book_size,
+ 0,
+ tp1->mbcnt);
+ }
+ if (asoc->total_output_queue_size >= tp1->book_size) {
+ atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
+ } else {
+ asoc->total_output_queue_size = 0;
+ }
+
+ if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
+ ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
+ if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
+ stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
+ } else {
+ stcb->sctp_socket->so_snd.sb_cc = 0;
+
+ }
+ }
+}
+
+#endif
+
+int
+sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
+ uint8_t sent, int so_locked
+#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
+ SCTP_UNUSED
+#endif
+ )
+{
+ struct sctp_stream_out *strq;
+ struct sctp_tmit_chunk *chk = NULL, *tp2;
+ struct sctp_stream_queue_pending *sp;
+ uint32_t mid;
+ uint16_t sid;
+ uint8_t foundeom = 0;
+ int ret_sz = 0;
+ int notdone;
+ int do_wakeup_routine = 0;
+
+#if defined(__APPLE__)
+ if (so_locked) {
+ sctp_lock_assert(SCTP_INP_SO(stcb->sctp_ep));
+ } else {
+ sctp_unlock_assert(SCTP_INP_SO(stcb->sctp_ep));
+ }
+#endif
+ sid = tp1->rec.data.sid;
+ mid = tp1->rec.data.mid;
+ if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) {
+ stcb->asoc.abandoned_sent[0]++;
+ stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
+ stcb->asoc.strmout[sid].abandoned_sent[0]++;
+#if defined(SCTP_DETAILED_STR_STATS)
+ stcb->asoc.strmout[stream].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
+#endif
+ } else {
+ stcb->asoc.abandoned_unsent[0]++;
+ stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
+ stcb->asoc.strmout[sid].abandoned_unsent[0]++;
+#if defined(SCTP_DETAILED_STR_STATS)
+ stcb->asoc.strmout[stream].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
+#endif
+ }
+ do {
+ ret_sz += tp1->book_size;
+ if (tp1->data != NULL) {
+ if (tp1->sent < SCTP_DATAGRAM_RESEND) {
+ sctp_flight_size_decrease(tp1);
+ sctp_total_flight_decrease(stcb, tp1);
+ }
+ sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
+ stcb->asoc.peers_rwnd += tp1->send_size;
+ stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
+ if (sent) {
+ sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
+ } else {
+ sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
+ }
+ if (tp1->data) {
+ sctp_m_freem(tp1->data);
+ tp1->data = NULL;
+ }
+ do_wakeup_routine = 1;
+ if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
+ stcb->asoc.sent_queue_cnt_removeable--;
+ }
+ }
+ tp1->sent = SCTP_FORWARD_TSN_SKIP;
+ if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
+ SCTP_DATA_NOT_FRAG) {
+ /* not frag'ed we ae done */
+ notdone = 0;
+ foundeom = 1;
+ } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
+ /* end of frag, we are done */
+ notdone = 0;
+ foundeom = 1;
+ } else {
+ /*
+ * Its a begin or middle piece, we must mark all of
+ * it
+ */
+ notdone = 1;
+ tp1 = TAILQ_NEXT(tp1, sctp_next);
+ }
+ } while (tp1 && notdone);
+ if (foundeom == 0) {
+ /*
+ * The multi-part message was scattered across the send and
+ * sent queue.
+ */
+ TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
+ if ((tp1->rec.data.sid != sid) ||
+ (!SCTP_MID_EQ(stcb->asoc.idata_supported, tp1->rec.data.mid, mid))) {
+ break;
+ }
+ /* save to chk in case we have some on stream out
+ * queue. If so and we have an un-transmitted one
+ * we don't have to fudge the TSN.
+ */
+ chk = tp1;
+ ret_sz += tp1->book_size;
+ sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
+ if (sent) {
+ sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
+ } else {
+ sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
+ }
+ if (tp1->data) {
+ sctp_m_freem(tp1->data);
+ tp1->data = NULL;
+ }
+ /* No flight involved here book the size to 0 */
+ tp1->book_size = 0;
+ if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
+ foundeom = 1;
+ }
+ do_wakeup_routine = 1;
+ tp1->sent = SCTP_FORWARD_TSN_SKIP;
+ TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
+ /* on to the sent queue so we can wait for it to be passed by. */
+ TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
+ sctp_next);
+ stcb->asoc.send_queue_cnt--;
+ stcb->asoc.sent_queue_cnt++;
+ }
+ }
+ if (foundeom == 0) {
+ /*
+ * Still no eom found. That means there
+ * is stuff left on the stream out queue.. yuck.
+ */
+ SCTP_TCB_SEND_LOCK(stcb);
+ strq = &stcb->asoc.strmout[sid];
+ sp = TAILQ_FIRST(&strq->outqueue);
+ if (sp != NULL) {
+ sp->discard_rest = 1;
+ /*
+ * We may need to put a chunk on the
+ * queue that holds the TSN that
+ * would have been sent with the LAST
+ * bit.
+ */
+ if (chk == NULL) {
+ /* Yep, we have to */
+ sctp_alloc_a_chunk(stcb, chk);
+ if (chk == NULL) {
+ /* we are hosed. All we can
+ * do is nothing.. which will
+ * cause an abort if the peer is
+ * paying attention.
+ */
+ goto oh_well;
+ }
+ memset(chk, 0, sizeof(*chk));
+ chk->rec.data.rcv_flags = 0;
+ chk->sent = SCTP_FORWARD_TSN_SKIP;
+ chk->asoc = &stcb->asoc;
+ if (stcb->asoc.idata_supported == 0) {
+ if (sp->sinfo_flags & SCTP_UNORDERED) {
+ chk->rec.data.mid = 0;
+ } else {
+ chk->rec.data.mid = strq->next_mid_ordered;
+ }
+ } else {
+ if (sp->sinfo_flags & SCTP_UNORDERED) {
+ chk->rec.data.mid = strq->next_mid_unordered;
+ } else {
+ chk->rec.data.mid = strq->next_mid_ordered;
+ }
+ }
+ chk->rec.data.sid = sp->sid;
+ chk->rec.data.ppid = sp->ppid;
+ chk->rec.data.context = sp->context;
+ chk->flags = sp->act_flags;
+ chk->whoTo = NULL;
+#if defined(__FreeBSD__) || defined(__Panda__)
+ chk->rec.data.tsn = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
+#else
+ chk->rec.data.tsn = stcb->asoc.sending_seq++;
+#endif
+ strq->chunks_on_queues++;
+ TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
+ stcb->asoc.sent_queue_cnt++;
+ stcb->asoc.pr_sctp_cnt++;
+ }
+ chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
+ if (sp->sinfo_flags & SCTP_UNORDERED) {
+ chk->rec.data.rcv_flags |= SCTP_DATA_UNORDERED;
+ }
+ if (stcb->asoc.idata_supported == 0) {
+ if ((sp->sinfo_flags & SCTP_UNORDERED) == 0) {
+ strq->next_mid_ordered++;
+ }
+ } else {
+ if (sp->sinfo_flags & SCTP_UNORDERED) {
+ strq->next_mid_unordered++;
+ } else {
+ strq->next_mid_ordered++;
+ }
+ }
+ oh_well:
+ if (sp->data) {
+ /* Pull any data to free up the SB and
+ * allow sender to "add more" while we
+ * will throw away :-)
+ */
+ sctp_free_spbufspace(stcb, &stcb->asoc, sp);
+ ret_sz += sp->length;
+ do_wakeup_routine = 1;
+ sp->some_taken = 1;
+ sctp_m_freem(sp->data);
+ sp->data = NULL;
+ sp->tail_mbuf = NULL;
+ sp->length = 0;
+ }
+ }
+ SCTP_TCB_SEND_UNLOCK(stcb);
+ }
+ if (do_wakeup_routine) {
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ struct socket *so;
+
+ so = SCTP_INP_SO(stcb->sctp_ep);
+ if (!so_locked) {
+ atomic_add_int(&stcb->asoc.refcnt, 1);
+ SCTP_TCB_UNLOCK(stcb);
+ SCTP_SOCKET_LOCK(so, 1);
+ SCTP_TCB_LOCK(stcb);
+ atomic_subtract_int(&stcb->asoc.refcnt, 1);
+ if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
+ /* assoc was freed while we were unlocked */
+ SCTP_SOCKET_UNLOCK(so, 1);
+ return (ret_sz);
+ }
+ }
+#endif
+ sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
+#if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
+ if (!so_locked) {
+ SCTP_SOCKET_UNLOCK(so, 1);
+ }
+#endif
+ }
+ return (ret_sz);
+}
+
+/*
+ * checks to see if the given address, sa, is one that is currently known by
+ * the kernel note: can't distinguish the same address on multiple interfaces
+ * and doesn't handle multiple addresses with different zone/scope id's note:
+ * ifa_ifwithaddr() compares the entire sockaddr struct
+ */
+struct sctp_ifa *
+sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
+ int holds_lock)
+{
+ struct sctp_laddr *laddr;
+
+ if (holds_lock == 0) {
+ SCTP_INP_RLOCK(inp);
+ }
+
+ LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
+ if (laddr->ifa == NULL)
+ continue;
+ if (addr->sa_family != laddr->ifa->address.sa.sa_family)
+ continue;
+#ifdef INET
+ if (addr->sa_family == AF_INET) {
+ if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
+ laddr->ifa->address.sin.sin_addr.s_addr) {
+ /* found him. */
+ if (holds_lock == 0) {
+ SCTP_INP_RUNLOCK(inp);
+ }
+ return (laddr->ifa);
+ break;
+ }
+ }
+#endif
+#ifdef INET6
+ if (addr->sa_family == AF_INET6) {
+ if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
+ &laddr->ifa->address.sin6)) {
+ /* found him. */
+ if (holds_lock == 0) {
+ SCTP_INP_RUNLOCK(inp);
+ }
+ return (laddr->ifa);
+ break;
+ }
+ }
+#endif
+#if defined(__Userspace__)
+ if (addr->sa_family == AF_CONN) {
+ if (((struct sockaddr_conn *)addr)->sconn_addr == laddr->ifa->address.sconn.sconn_addr) {
+ /* found him. */
+ if (holds_lock == 0) {
+ SCTP_INP_RUNLOCK(inp);
+ }
+ return (laddr->ifa);
+ break;
+ }
+ }
+#endif
+ }
+ if (holds_lock == 0) {
+ SCTP_INP_RUNLOCK(inp);
+ }
+ return (NULL);
+}
+
+uint32_t
+sctp_get_ifa_hash_val(struct sockaddr *addr)
+{
+ switch (addr->sa_family) {
+#ifdef INET
+ case AF_INET:
+ {
+ struct sockaddr_in *sin;
+
+ sin = (struct sockaddr_in *)addr;
+ return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
+ }
+#endif
+#ifdef INET6
+ case AF_INET6:
+ {
+ struct sockaddr_in6 *sin6;
+ uint32_t hash_of_addr;
+
+ sin6 = (struct sockaddr_in6 *)addr;
+#if !defined(__Windows__) && !defined(__Userspace_os_FreeBSD) && !defined(__Userspace_os_Darwin) && !defined(__Userspace_os_Windows)
+ hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
+ sin6->sin6_addr.s6_addr32[1] +
+ sin6->sin6_addr.s6_addr32[2] +
+ sin6->sin6_addr.s6_addr32[3]);
+#else
+ hash_of_addr = (((uint32_t *)&sin6->sin6_addr)[0] +
+ ((uint32_t *)&sin6->sin6_addr)[1] +
+ ((uint32_t *)&sin6->sin6_addr)[2] +
+ ((uint32_t *)&sin6->sin6_addr)[3]);
+#endif
+ hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
+ return (hash_of_addr);
+ }
+#endif
+#if defined(__Userspace__)
+ case AF_CONN:
+ {
+ struct sockaddr_conn *sconn;
+ uintptr_t temp;
+
+ sconn = (struct sockaddr_conn *)addr;
+ temp = (uintptr_t)sconn->sconn_addr;
+ return ((uint32_t)(temp ^ (temp >> 16)));
+ }
+#endif
+ default:
+ break;
+ }
+ return (0);
+}
+
+struct sctp_ifa *
+sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
+{
+ struct sctp_ifa *sctp_ifap;
+ struct sctp_vrf *vrf;
+ struct sctp_ifalist *hash_head;
+ uint32_t hash_of_addr;
+
+ if (holds_lock == 0)
+ SCTP_IPI_ADDR_RLOCK();
+
+ vrf = sctp_find_vrf(vrf_id);
+ if (vrf == NULL) {
+ if (holds_lock == 0)
+ SCTP_IPI_ADDR_RUNLOCK();
+ return (NULL);
+ }
+
+ hash_of_addr = sctp_get_ifa_hash_val(addr);
+
+ hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
+ if (hash_head == NULL) {
+ SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
+ hash_of_addr, (uint32_t)vrf->vrf_addr_hashmark,
+ (uint32_t)(hash_of_addr & vrf->vrf_addr_hashmark));
+ sctp_print_address(addr);
+ SCTP_PRINTF("No such bucket for address\n");
+ if (holds_lock == 0)
+ SCTP_IPI_ADDR_RUNLOCK();
+
+ return (NULL);
+ }
+ LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
+ if (addr->sa_family != sctp_ifap->address.sa.sa_family)
+ continue;
+#ifdef INET
+ if (addr->sa_family == AF_INET) {
+ if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
+ sctp_ifap->address.sin.sin_addr.s_addr) {
+ /* found him. */
+ if (holds_lock == 0)
+ SCTP_IPI_ADDR_RUNLOCK();
+ return (sctp_ifap);
+ break;
+ }
+ }
+#endif
+#ifdef INET6
+ if (addr->sa_family == AF_INET6) {
+ if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
+ &sctp_ifap->address.sin6)) {
+ /* found him. */
+ if (holds_lock == 0)
+ SCTP_IPI_ADDR_RUNLOCK();
+ return (sctp_ifap);
+ break;
+ }
+ }
+#endif
+#if defined(__Userspace__)
+ if (addr->sa_family == AF_CONN) {
+ if (((struct sockaddr_conn *)addr)->sconn_addr == sctp_ifap->address.sconn.sconn_addr) {
+ /* found him. */
+ if (holds_lock == 0)
+ SCTP_IPI_ADDR_RUNLOCK();
+ return (sctp_ifap);
+ break;
+ }
+ }
+#endif
+ }
+ if (holds_lock == 0)
+ SCTP_IPI_ADDR_RUNLOCK();
+ return (NULL);
+}
+
+static void
+sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t *freed_so_far, int hold_rlock,
+ uint32_t rwnd_req)
+{
+ /* User pulled some data, do we need a rwnd update? */
+ int r_unlocked = 0;
+ uint32_t dif, rwnd;
+ struct socket *so = NULL;
+
+ if (stcb == NULL)
+ return;
+
+ atomic_add_int(&stcb->asoc.refcnt, 1);
+
+ if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED |
+ SCTP_STATE_SHUTDOWN_RECEIVED |
+ SCTP_STATE_SHUTDOWN_ACK_SENT)) {
+ /* Pre-check If we are freeing no update */
+ goto no_lock;
+ }
+ SCTP_INP_INCR_REF(stcb->sctp_ep);
+ if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
+ (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
+ goto out;
+ }
+ so = stcb->sctp_socket;
+ if (so == NULL) {
+ goto out;
+ }
+ atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
+ /* Have you have freed enough to look */
+ *freed_so_far = 0;
+ /* Yep, its worth a look and the lock overhead */
+
+ /* Figure out what the rwnd would be */
+ rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
+ if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
+ dif = rwnd - stcb->asoc.my_last_reported_rwnd;
+ } else {
+ dif = 0;
+ }
+ if (dif >= rwnd_req) {
+ if (hold_rlock) {
+ SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
+ r_unlocked = 1;
+ }
+ if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
+ /*
+ * One last check before we allow the guy possibly
+ * to get in. There is a race, where the guy has not
+ * reached the gate. In that case
+ */
+ goto out;
+ }
+ SCTP_TCB_LOCK(stcb);
+ if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
+ /* No reports here */
+ SCTP_TCB_UNLOCK(stcb);
+ goto out;
+ }
+ SCTP_STAT_INCR(sctps_wu_sacks_sent);
+ sctp_send_sack(stcb, SCTP_SO_LOCKED);
+
+ sctp_chunk_output(stcb->sctp_ep, stcb,
+ SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
+ /* make sure no timer is running */
+ sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL,
+ SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
+ SCTP_TCB_UNLOCK(stcb);
+ } else {
+ /* Update how much we have pending */
+ stcb->freed_by_sorcv_sincelast = dif;
+ }
+ out:
+ if (so && r_unlocked && hold_rlock) {
+ SCTP_INP_READ_LOCK(stcb->sctp_ep);
+ }
+
+ SCTP_INP_DECR_REF(stcb->sctp_ep);
+ no_lock:
+ atomic_add_int(&stcb->asoc.refcnt, -1);
+ return;
+}
+
+int
+sctp_sorecvmsg(struct socket *so,
+ struct uio *uio,
+ struct mbuf **mp,
+ struct sockaddr *from,
+ int fromlen,
+ int *msg_flags,
+ struct sctp_sndrcvinfo *sinfo,
+ int filling_sinfo)
+{
+ /*
+ * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
+ * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
+ * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
+ * On the way out we may send out any combination of:
+ * MSG_NOTIFICATION MSG_EOR
+ *
+ */
+ struct sctp_inpcb *inp = NULL;
+ int my_len = 0;
+ int cp_len = 0, error = 0;
+ struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
+ struct mbuf *m = NULL;
+ struct sctp_tcb *stcb = NULL;
+ int wakeup_read_socket = 0;
+ int freecnt_applied = 0;
+ int out_flags = 0, in_flags = 0;
+ int block_allowed = 1;
+ uint32_t freed_so_far = 0;
+ uint32_t copied_so_far = 0;
+ int in_eeor_mode = 0;
+ int no_rcv_needed = 0;
+ uint32_t rwnd_req = 0;
+ int hold_sblock = 0;
+ int hold_rlock = 0;
+ ssize_t slen = 0;
+ uint32_t held_length = 0;
+#if defined(__FreeBSD__) && __FreeBSD_version >= 700000
+ int sockbuf_lock = 0;
+#endif
+
+ if (uio == NULL) {
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ return (EINVAL);
+ }
+
+ if (msg_flags) {
+ in_flags = *msg_flags;
+ if (in_flags & MSG_PEEK)
+ SCTP_STAT_INCR(sctps_read_peeks);
+ } else {
+ in_flags = 0;
+ }
+#if defined(__APPLE__)
+#if defined(APPLE_LEOPARD)
+ slen = uio->uio_resid;
+#else
+ slen = uio_resid(uio);
+#endif
+#else
+ slen = uio->uio_resid;
+#endif
+
+ /* Pull in and set up our int flags */
+ if (in_flags & MSG_OOB) {
+ /* Out of band's NOT supported */
+ return (EOPNOTSUPP);
+ }
+ if ((in_flags & MSG_PEEK) && (mp != NULL)) {
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ return (EINVAL);
+ }
+ if ((in_flags & (MSG_DONTWAIT
+#if defined(__FreeBSD__) && __FreeBSD_version > 500000
+ | MSG_NBIO
+#endif
+ )) ||
+ SCTP_SO_IS_NBIO(so)) {
+ block_allowed = 0;
+ }
+ /* setup the endpoint */
+ inp = (struct sctp_inpcb *)so->so_pcb;
+ if (inp == NULL) {
+ SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
+ return (EFAULT);
+ }
+ rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
+ /* Must be at least a MTU's worth */
+ if (rwnd_req < SCTP_MIN_RWND)
+ rwnd_req = SCTP_MIN_RWND;
+ in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
+#if defined(__APPLE__)
+#if defined(APPLE_LEOPARD)
+ sctp_misc_ints(SCTP_SORECV_ENTER,
+ rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, uio->uio_resid);
+#else
+ sctp_misc_ints(SCTP_SORECV_ENTER,
+ rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, uio_resid(uio));
+#endif
+#else
+ sctp_misc_ints(SCTP_SORECV_ENTER,
+ rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
+#endif
+ }
+#if (defined(__FreeBSD__) && __FreeBSD_version < 700000) || defined(__Userspace__)
+ SOCKBUF_LOCK(&so->so_rcv);
+ hold_sblock = 1;
+#endif
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) &SCTP_RECV_RWND_LOGGING_ENABLE) {
+#if defined(__APPLE__)
+#if defined(APPLE_LEOPARD)
+ sctp_misc_ints(SCTP_SORECV_ENTERPL,
+ rwnd_req, block_allowed, so->so_rcv.sb_cc, uio->uio_resid);
+#else
+ sctp_misc_ints(SCTP_SORECV_ENTERPL,
+ rwnd_req, block_allowed, so->so_rcv.sb_cc, uio_resid(uio));
+#endif
+#else
+ sctp_misc_ints(SCTP_SORECV_ENTERPL,
+ rwnd_req, block_allowed, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
+#endif
+ }
+
+#if defined(__APPLE__)
+ error = sblock(&so->so_rcv, SBLOCKWAIT(in_flags));
+#endif
+
+#if defined(__FreeBSD__)
+ error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
+#endif
+ if (error) {
+ goto release_unlocked;
+ }
+#if defined(__FreeBSD__) && __FreeBSD_version >= 700000
+ sockbuf_lock = 1;
+#endif
+ restart:
+#if (defined(__FreeBSD__) && __FreeBSD_version < 700000) || defined(__Userspace__)
+ if (hold_sblock == 0) {
+ SOCKBUF_LOCK(&so->so_rcv);
+ hold_sblock = 1;
+ }
+#endif
+#if defined(__APPLE__)
+ sbunlock(&so->so_rcv, 1);
+#endif
+
+#if defined(__FreeBSD__) && __FreeBSD_version < 700000
+ sbunlock(&so->so_rcv);
+#endif
+
+ restart_nosblocks:
+ if (hold_sblock == 0) {
+ SOCKBUF_LOCK(&so->so_rcv);
+ hold_sblock = 1;
+ }
+ if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
+ (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
+ goto out;
+ }
+#if (defined(__FreeBSD__) && __FreeBSD_version > 500000) || defined(__Windows__)
+ if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
+#else
+ if ((so->so_state & SS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
+#endif
+ if (so->so_error) {
+ error = so->so_error;
+ if ((in_flags & MSG_PEEK) == 0)
+ so->so_error = 0;
+ goto out;
+ } else {
+ if (so->so_rcv.sb_cc == 0) {
+ /* indicate EOF */
+ error = 0;
+ goto out;
+ }
+ }
+ }
+ if (so->so_rcv.sb_cc <= held_length) {
+ if (so->so_error) {
+ error = so->so_error;
+ if ((in_flags & MSG_PEEK) == 0) {
+ so->so_error = 0;
+ }
+ goto out;
+ }
+ if ((so->so_rcv.sb_cc == 0) &&
+ ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
+ (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
+ if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
+ /* For active open side clear flags for re-use
+ * passive open is blocked by connect.
+ */
+ if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
+ /* You were aborted, passive side always hits here */
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
+ error = ECONNRESET;
+ }
+ so->so_state &= ~(SS_ISCONNECTING |
+ SS_ISDISCONNECTING |
+ SS_ISCONFIRMING |
+ SS_ISCONNECTED);
+ if (error == 0) {
+ if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
+ error = ENOTCONN;
+ }
+ }
+ goto out;
+ }
+ }
+ if (block_allowed) {
+ error = sbwait(&so->so_rcv);
+ if (error) {
+ goto out;
+ }
+ held_length = 0;
+ goto restart_nosblocks;
+ } else {
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
+ error = EWOULDBLOCK;
+ goto out;
+ }
+ }
+ if (hold_sblock == 1) {
+ SOCKBUF_UNLOCK(&so->so_rcv);
+ hold_sblock = 0;
+ }
+#if defined(__APPLE__)
+ error = sblock(&so->so_rcv, SBLOCKWAIT(in_flags));
+#endif
+#if defined(__FreeBSD__) && __FreeBSD_version < 700000
+ error = sblock(&so->so_rcv, (block_allowed ? M_WAITOK : 0));
+#endif
+ /* we possibly have data we can read */
+ /*sa_ignore FREED_MEMORY*/
+ control = TAILQ_FIRST(&inp->read_queue);
+ if (control == NULL) {
+ /* This could be happening since
+ * the appender did the increment but as not
+ * yet did the tailq insert onto the read_queue
+ */
+ if (hold_rlock == 0) {
+ SCTP_INP_READ_LOCK(inp);
+ }
+ control = TAILQ_FIRST(&inp->read_queue);
+ if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
+#ifdef INVARIANTS
+ panic("Huh, its non zero and nothing on control?");
+#endif
+ so->so_rcv.sb_cc = 0;
+ }
+ SCTP_INP_READ_UNLOCK(inp);
+ hold_rlock = 0;
+ goto restart;
+ }
+
+ if ((control->length == 0) &&
+ (control->do_not_ref_stcb)) {
+ /* Clean up code for freeing assoc that left behind a pdapi..
+ * maybe a peer in EEOR that just closed after sending and
+ * never indicated a EOR.
+ */
+ if (hold_rlock == 0) {
+ hold_rlock = 1;
+ SCTP_INP_READ_LOCK(inp);
+ }
+ control->held_length = 0;
+ if (control->data) {
+ /* Hmm there is data here .. fix */
+ struct mbuf *m_tmp;
+ int cnt = 0;
+ m_tmp = control->data;
+ while (m_tmp) {
+ cnt += SCTP_BUF_LEN(m_tmp);
+ if (SCTP_BUF_NEXT(m_tmp) == NULL) {
+ control->tail_mbuf = m_tmp;
+ control->end_added = 1;
+ }
+ m_tmp = SCTP_BUF_NEXT(m_tmp);
+ }
+ control->length = cnt;
+ } else {
+ /* remove it */
+ TAILQ_REMOVE(&inp->read_queue, control, next);
+ /* Add back any hiddend data */
+ sctp_free_remote_addr(control->whoFrom);
+ sctp_free_a_readq(stcb, control);
+ }
+ if (hold_rlock) {
+ hold_rlock = 0;
+ SCTP_INP_READ_UNLOCK(inp);
+ }
+ goto restart;
+ }
+ if ((control->length == 0) &&
+ (control->end_added == 1)) {
+ /* Do we also need to check for (control->pdapi_aborted == 1)? */
+ if (hold_rlock == 0) {
+ hold_rlock = 1;
+ SCTP_INP_READ_LOCK(inp);
+ }
+ TAILQ_REMOVE(&inp->read_queue, control, next);
+ if (control->data) {
+#ifdef INVARIANTS
+ panic("control->data not null but control->length == 0");
+#else
+ SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
+ sctp_m_freem(control->data);
+ control->data = NULL;
+#endif
+ }
+ if (control->aux_data) {
+ sctp_m_free (control->aux_data);
+ control->aux_data = NULL;
+ }
+#ifdef INVARIANTS
+ if (control->on_strm_q) {
+ panic("About to free ctl:%p so:%p and its in %d",
+ control, so, control->on_strm_q);
+ }
+#endif
+ sctp_free_remote_addr(control->whoFrom);
+ sctp_free_a_readq(stcb, control);
+ if (hold_rlock) {
+ hold_rlock = 0;
+ SCTP_INP_READ_UNLOCK(inp);
+ }
+ goto restart;
+ }
+ if (control->length == 0) {
+ if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
+ (filling_sinfo)) {
+ /* find a more suitable one then this */
+ ctl = TAILQ_NEXT(control, next);
+ while (ctl) {
+ if ((ctl->stcb != control->stcb) && (ctl->length) &&
+ (ctl->some_taken ||
+ (ctl->spec_flags & M_NOTIFICATION) ||
+ ((ctl->do_not_ref_stcb == 0) &&
+ (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
+ ) {
+ /*-
+ * If we have a different TCB next, and there is data
+ * present. If we have already taken some (pdapi), OR we can
+ * ref the tcb and no delivery as started on this stream, we
+ * take it. Note we allow a notification on a different
+ * assoc to be delivered..
+ */
+ control = ctl;
+ goto found_one;
+ } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
+ (ctl->length) &&
+ ((ctl->some_taken) ||
+ ((ctl->do_not_ref_stcb == 0) &&
+ ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
+ (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
+ /*-
+ * If we have the same tcb, and there is data present, and we
+ * have the strm interleave feature present. Then if we have
+ * taken some (pdapi) or we can refer to tht tcb AND we have
+ * not started a delivery for this stream, we can take it.
+ * Note we do NOT allow a notificaiton on the same assoc to
+ * be delivered.
+ */
+ control = ctl;
+ goto found_one;
+ }
+ ctl = TAILQ_NEXT(ctl, next);
+ }
+ }
+ /*
+ * if we reach here, not suitable replacement is available
+ * <or> fragment interleave is NOT on. So stuff the sb_cc
+ * into the our held count, and its time to sleep again.
+ */
+ held_length = so->so_rcv.sb_cc;
+ control->held_length = so->so_rcv.sb_cc;
+ goto restart;
+ }
+ /* Clear the held length since there is something to read */
+ control->held_length = 0;
+ found_one:
+ /*
+ * If we reach here, control has a some data for us to read off.
+ * Note that stcb COULD be NULL.
+ */
+ if (hold_rlock == 0) {
+ hold_rlock = 1;
+ SCTP_INP_READ_LOCK(inp);
+ }
+ control->some_taken++;
+ stcb = control->stcb;
+ if (stcb) {
+ if ((control->do_not_ref_stcb == 0) &&
+ (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
+ if (freecnt_applied == 0)
+ stcb = NULL;
+ } else if (control->do_not_ref_stcb == 0) {
+ /* you can't free it on me please */
+ /*
+ * The lock on the socket buffer protects us so the
+ * free code will stop. But since we used the socketbuf
+ * lock and the sender uses the tcb_lock to increment,
+ * we need to use the atomic add to the refcnt
+ */
+ if (freecnt_applied) {
+#ifdef INVARIANTS
+ panic("refcnt already incremented");
+#else
+ SCTP_PRINTF("refcnt already incremented?\n");
+#endif
+ } else {
+ atomic_add_int(&stcb->asoc.refcnt, 1);
+ freecnt_applied = 1;
+ }
+ /*
+ * Setup to remember how much we have not yet told
+ * the peer our rwnd has opened up. Note we grab
+ * the value from the tcb from last time.
+ * Note too that sack sending clears this when a sack
+ * is sent, which is fine. Once we hit the rwnd_req,
+ * we then will go to the sctp_user_rcvd() that will
+ * not lock until it KNOWs it MUST send a WUP-SACK.
+ */
+ freed_so_far = stcb->freed_by_sorcv_sincelast;
+ stcb->freed_by_sorcv_sincelast = 0;
+ }
+ }
+ if (stcb &&
+ ((control->spec_flags & M_NOTIFICATION) == 0) &&
+ control->do_not_ref_stcb == 0) {
+ stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
+ }
+
+ /* First lets get off the sinfo and sockaddr info */
+ if ((sinfo != NULL) && (filling_sinfo != 0)) {
+ sinfo->sinfo_stream = control->sinfo_stream;
+ sinfo->sinfo_ssn = (uint16_t)control->mid;
+ sinfo->sinfo_flags = control->sinfo_flags;
+ sinfo->sinfo_ppid = control->sinfo_ppid;
+ sinfo->sinfo_context =control->sinfo_context;
+ sinfo->sinfo_timetolive = control->sinfo_timetolive;
+ sinfo->sinfo_tsn = control->sinfo_tsn;
+ sinfo->sinfo_cumtsn = control->sinfo_cumtsn;
+ sinfo->sinfo_assoc_id = control->sinfo_assoc_id;
+ nxt = TAILQ_NEXT(control, next);
+ if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
+ sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
+ struct sctp_extrcvinfo *s_extra;
+ s_extra = (struct sctp_extrcvinfo *)sinfo;
+ if ((nxt) &&
+ (nxt->length)) {
+ s_extra->serinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
+ if (nxt->sinfo_flags & SCTP_UNORDERED) {
+ s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
+ }
+ if (nxt->spec_flags & M_NOTIFICATION) {
+ s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
+ }
+ s_extra->serinfo_next_aid = nxt->sinfo_assoc_id;
+ s_extra->serinfo_next_length = nxt->length;
+ s_extra->serinfo_next_ppid = nxt->sinfo_ppid;
+ s_extra->serinfo_next_stream = nxt->sinfo_stream;
+ if (nxt->tail_mbuf != NULL) {
+ if (nxt->end_added) {
+ s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
+ }
+ }
+ } else {
+ /* we explicitly 0 this, since the memcpy got
+ * some other things beyond the older sinfo_
+ * that is on the control's structure :-D
+ */
+ nxt = NULL;
+ s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
+ s_extra->serinfo_next_aid = 0;
+ s_extra->serinfo_next_length = 0;
+ s_extra->serinfo_next_ppid = 0;
+ s_extra->serinfo_next_stream = 0;
+ }
+ }
+ /*
+ * update off the real current cum-ack, if we have an stcb.
+ */
+ if ((control->do_not_ref_stcb == 0) && stcb)
+ sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
+ /*
+ * mask off the high bits, we keep the actual chunk bits in
+ * there.
+ */
+ sinfo->sinfo_flags &= 0x00ff;
+ if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
+ sinfo->sinfo_flags |= SCTP_UNORDERED;
+ }
+ }
+#ifdef SCTP_ASOCLOG_OF_TSNS
+ {
+ int index, newindex;
+ struct sctp_pcbtsn_rlog *entry;
+ do {
+ index = inp->readlog_index;
+ newindex = index + 1;
+ if (newindex >= SCTP_READ_LOG_SIZE) {
+ newindex = 0;
+ }
+ } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
+ entry = &inp->readlog[index];
+ entry->vtag = control->sinfo_assoc_id;
+ entry->strm = control->sinfo_stream;
+ entry->seq = (uint16_t)control->mid;
+ entry->sz = control->length;
+ entry->flgs = control->sinfo_flags;
+ }
+#endif
+ if ((fromlen > 0) && (from != NULL)) {
+ union sctp_sockstore store;
+ size_t len;
+
+ switch (control->whoFrom->ro._l_addr.sa.sa_family) {
+#ifdef INET6
+ case AF_INET6:
+ len = sizeof(struct sockaddr_in6);
+ store.sin6 = control->whoFrom->ro._l_addr.sin6;
+ store.sin6.sin6_port = control->port_from;
+ break;
+#endif
+#ifdef INET
+ case AF_INET:
+#ifdef INET6
+ if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
+ len = sizeof(struct sockaddr_in6);
+ in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin,
+ &store.sin6);
+ store.sin6.sin6_port = control->port_from;
+ } else {
+ len = sizeof(struct sockaddr_in);
+ store.sin = control->whoFrom->ro._l_addr.sin;
+ store.sin.sin_port = control->port_from;
+ }
+#else
+ len = sizeof(struct sockaddr_in);
+ store.sin = control->whoFrom->ro._l_addr.sin;
+ store.sin.sin_port = control->port_from;
+#endif
+ break;
+#endif
+#if defined(__Userspace__)
+ case AF_CONN:
+ len = sizeof(struct sockaddr_conn);
+ store.sconn = control->whoFrom->ro._l_addr.sconn;
+ store.sconn.sconn_port = control->port_from;
+ break;
+#endif
+ default:
+ len = 0;
+ break;
+ }
+ memcpy(from, &store, min((size_t)fromlen, len));
+#if defined(SCTP_EMBEDDED_V6_SCOPE)
+#ifdef INET6
+ {
+ struct sockaddr_in6 lsa6, *from6;
+
+ from6 = (struct sockaddr_in6 *)from;
+ sctp_recover_scope_mac(from6, (&lsa6));
+ }
+#endif
+#endif
+ }
+ if (hold_rlock) {
+ SCTP_INP_READ_UNLOCK(inp);
+ hold_rlock = 0;
+ }
+ if (hold_sblock) {
+ SOCKBUF_UNLOCK(&so->so_rcv);
+ hold_sblock = 0;
+ }
+ /* now copy out what data we can */
+ if (mp == NULL) {
+ /* copy out each mbuf in the chain up to length */
+ get_more_data:
+ m = control->data;
+ while (m) {
+ /* Move out all we can */
+#if defined(__APPLE__)
+#if defined(APPLE_LEOPARD)
+ cp_len = (int)uio->uio_resid;
+#else
+ cp_len = (int)uio_resid(uio);
+#endif
+#else
+ cp_len = (int)uio->uio_resid;
+#endif
+ my_len = (int)SCTP_BUF_LEN(m);
+ if (cp_len > my_len) {
+ /* not enough in this buf */
+ cp_len = my_len;
+ }
+ if (hold_rlock) {
+ SCTP_INP_READ_UNLOCK(inp);
+ hold_rlock = 0;
+ }
+#if defined(__APPLE__)
+ SCTP_SOCKET_UNLOCK(so, 0);
+#endif
+ if (cp_len > 0)
+ error = uiomove(mtod(m, char *), cp_len, uio);
+#if defined(__APPLE__)
+ SCTP_SOCKET_LOCK(so, 0);
+#endif
+ /* re-read */
+ if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
+ goto release;
+ }
+
+ if ((control->do_not_ref_stcb == 0) && stcb &&
+ stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
+ no_rcv_needed = 1;
+ }
+ if (error) {
+ /* error we are out of here */
+ goto release;
+ }
+ SCTP_INP_READ_LOCK(inp);
+ hold_rlock = 1;
+ if (cp_len == SCTP_BUF_LEN(m)) {
+ if ((SCTP_BUF_NEXT(m)== NULL) &&
+ (control->end_added)) {
+ out_flags |= MSG_EOR;
+ if ((control->do_not_ref_stcb == 0) &&
+ (control->stcb != NULL) &&
+ ((control->spec_flags & M_NOTIFICATION) == 0))
+ control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
+ }
+ if (control->spec_flags & M_NOTIFICATION) {
+ out_flags |= MSG_NOTIFICATION;
+ }
+ /* we ate up the mbuf */
+ if (in_flags & MSG_PEEK) {
+ /* just looking */
+ m = SCTP_BUF_NEXT(m);
+ copied_so_far += cp_len;
+ } else {
+ /* dispose of the mbuf */
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
+ sctp_sblog(&so->so_rcv,
+ control->do_not_ref_stcb?NULL:stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
+ }
+ sctp_sbfree(control, stcb, &so->so_rcv, m);
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
+ sctp_sblog(&so->so_rcv,
+ control->do_not_ref_stcb?NULL:stcb, SCTP_LOG_SBRESULT, 0);
+ }
+ copied_so_far += cp_len;
+ freed_so_far += cp_len;
+ freed_so_far += MSIZE;
+ atomic_subtract_int(&control->length, cp_len);
+ control->data = sctp_m_free(m);
+ m = control->data;
+ /* been through it all, must hold sb lock ok to null tail */
+ if (control->data == NULL) {
+#ifdef INVARIANTS
+#if defined(__FreeBSD__)
+ if ((control->end_added == 0) ||
+ (TAILQ_NEXT(control, next) == NULL)) {
+ /* If the end is not added, OR the
+ * next is NOT null we MUST have the lock.
+ */
+ if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
+ panic("Hmm we don't own the lock?");
+ }
+ }
+#endif
+#endif
+ control->tail_mbuf = NULL;
+#ifdef INVARIANTS
+ if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
+ panic("end_added, nothing left and no MSG_EOR");
+ }
+#endif
+ }
+ }
+ } else {
+ /* Do we need to trim the mbuf? */
+ if (control->spec_flags & M_NOTIFICATION) {
+ out_flags |= MSG_NOTIFICATION;
+ }
+ if ((in_flags & MSG_PEEK) == 0) {
+ SCTP_BUF_RESV_UF(m, cp_len);
+ SCTP_BUF_LEN(m) -= cp_len;
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
+ sctp_sblog(&so->so_rcv, control->do_not_ref_stcb?NULL:stcb, SCTP_LOG_SBFREE, cp_len);
+ }
+ atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
+ if ((control->do_not_ref_stcb == 0) &&
+ stcb) {
+ atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
+ }
+ copied_so_far += cp_len;
+ freed_so_far += cp_len;
+ freed_so_far += MSIZE;
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
+ sctp_sblog(&so->so_rcv, control->do_not_ref_stcb?NULL:stcb,
+ SCTP_LOG_SBRESULT, 0);
+ }
+ atomic_subtract_int(&control->length, cp_len);
+ } else {
+ copied_so_far += cp_len;
+ }
+ }
+#if defined(__APPLE__)
+#if defined(APPLE_LEOPARD)
+ if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
+#else
+ if ((out_flags & MSG_EOR) || (uio_resid(uio) == 0)) {
+#endif
+#else
+ if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
+#endif
+ break;
+ }
+ if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
+ (control->do_not_ref_stcb == 0) &&
+ (freed_so_far >= rwnd_req)) {
+ sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
+ }
+ } /* end while(m) */
+ /*
+ * At this point we have looked at it all and we either have
+ * a MSG_EOR/or read all the user wants... <OR>
+ * control->length == 0.
+ */
+ if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
+ /* we are done with this control */
+ if (control->length == 0) {
+ if (control->data) {
+#ifdef INVARIANTS
+ panic("control->data not null at read eor?");
+#else
+ SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
+ sctp_m_freem(control->data);
+ control->data = NULL;
+#endif
+ }
+ done_with_control:
+ if (hold_rlock == 0) {
+ SCTP_INP_READ_LOCK(inp);
+ hold_rlock = 1;
+ }
+ TAILQ_REMOVE(&inp->read_queue, control, next);
+ /* Add back any hiddend data */
+ if (control->held_length) {
+ held_length = 0;
+ control->held_length = 0;
+ wakeup_read_socket = 1;
+ }
+ if (control->aux_data) {
+ sctp_m_free (control->aux_data);
+ control->aux_data = NULL;
+ }
+ no_rcv_needed = control->do_not_ref_stcb;
+ sctp_free_remote_addr(control->whoFrom);
+ control->data = NULL;
+#ifdef INVARIANTS
+ if (control->on_strm_q) {
+ panic("About to free ctl:%p so:%p and its in %d",
+ control, so, control->on_strm_q);
+ }
+#endif
+ sctp_free_a_readq(stcb, control);
+ control = NULL;
+ if ((freed_so_far >= rwnd_req) &&
+ (no_rcv_needed == 0))
+ sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
+
+ } else {
+ /*
+ * The user did not read all of this
+ * message, turn off the returned MSG_EOR
+ * since we are leaving more behind on the
+ * control to read.
+ */
+#ifdef INVARIANTS
+ if (control->end_added &&
+ (control->data == NULL) &&
+ (control->tail_mbuf == NULL)) {
+ panic("Gak, control->length is corrupt?");
+ }
+#endif
+ no_rcv_needed = control->do_not_ref_stcb;
+ out_flags &= ~MSG_EOR;
+ }
+ }
+ if (out_flags & MSG_EOR) {
+ goto release;
+ }
+#if defined(__APPLE__)
+#if defined(APPLE_LEOPARD)
+ if ((uio->uio_resid == 0) ||
+#else
+ if ((uio_resid(uio) == 0) ||
+#endif
+#else
+ if ((uio->uio_resid == 0) ||
+#endif
+ ((in_eeor_mode) &&
+ (copied_so_far >= (uint32_t)max(so->so_rcv.sb_lowat, 1)))) {
+ goto release;
+ }
+ /*
+ * If I hit here the receiver wants more and this message is
+ * NOT done (pd-api). So two questions. Can we block? if not
+ * we are done. Did the user NOT set MSG_WAITALL?
+ */
+ if (block_allowed == 0) {
+ goto release;
+ }
+ /*
+ * We need to wait for more data a few things: - We don't
+ * sbunlock() so we don't get someone else reading. - We
+ * must be sure to account for the case where what is added
+ * is NOT to our control when we wakeup.
+ */
+
+ /* Do we need to tell the transport a rwnd update might be
+ * needed before we go to sleep?
+ */
+ if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
+ ((freed_so_far >= rwnd_req) &&
+ (control->do_not_ref_stcb == 0) &&
+ (no_rcv_needed == 0))) {
+ sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
+ }
+ wait_some_more:
+#if (defined(__FreeBSD__) && __FreeBSD_version > 500000) || defined(__Windows__)
+ if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
+ goto release;
+ }
+#else
+ if (so->so_state & SS_CANTRCVMORE) {
+ goto release;
+ }
+#endif
+
+ if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
+ goto release;
+
+ if (hold_rlock == 1) {
+ SCTP_INP_READ_UNLOCK(inp);
+ hold_rlock = 0;
+ }
+ if (hold_sblock == 0) {
+ SOCKBUF_LOCK(&so->so_rcv);
+ hold_sblock = 1;
+ }
+ if ((copied_so_far) && (control->length == 0) &&
+ (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
+ goto release;
+ }
+#if defined(__APPLE__)
+ sbunlock(&so->so_rcv, 1);
+#endif
+ if (so->so_rcv.sb_cc <= control->held_length) {
+ error = sbwait(&so->so_rcv);
+ if (error) {
+#if defined(__FreeBSD__)
+ goto release;
+#else
+ goto release_unlocked;
+#endif
+ }
+ control->held_length = 0;
+ }
+#if defined(__APPLE__)
+ error = sblock(&so->so_rcv, SBLOCKWAIT(in_flags));
+#endif
+ if (hold_sblock) {
+ SOCKBUF_UNLOCK(&so->so_rcv);
+ hold_sblock = 0;
+ }
+ if (control->length == 0) {
+ /* still nothing here */
+ if (control->end_added == 1) {
+ /* he aborted, or is done i.e.did a shutdown */
+ out_flags |= MSG_EOR;
+ if (control->pdapi_aborted) {
+ if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
+ control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
+
+ out_flags |= MSG_TRUNC;
+ } else {
+ if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
+ control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
+ }
+ goto done_with_control;
+ }
+ if (so->so_rcv.sb_cc > held_length) {
+ control->held_length = so->so_rcv.sb_cc;
+ held_length = 0;
+ }
+ goto wait_some_more;
+ } else if (control->data == NULL) {
+ /* we must re-sync since data
+ * is probably being added
+ */
+ SCTP_INP_READ_LOCK(inp);
+ if ((control->length > 0) && (control->data == NULL)) {
+ /* big trouble.. we have the lock and its corrupt? */
+#ifdef INVARIANTS
+ panic ("Impossible data==NULL length !=0");
+#endif
+ out_flags |= MSG_EOR;
+ out_flags |= MSG_TRUNC;
+ control->length = 0;
+ SCTP_INP_READ_UNLOCK(inp);
+ goto done_with_control;
+ }
+ SCTP_INP_READ_UNLOCK(inp);
+ /* We will fall around to get more data */
+ }
+ goto get_more_data;
+ } else {
+ /*-
+ * Give caller back the mbuf chain,
+ * store in uio_resid the length
+ */
+ wakeup_read_socket = 0;
+ if ((control->end_added == 0) ||
+ (TAILQ_NEXT(control, next) == NULL)) {
+ /* Need to get rlock */
+ if (hold_rlock == 0) {
+ SCTP_INP_READ_LOCK(inp);
+ hold_rlock = 1;
+ }
+ }
+ if (control->end_added) {
+ out_flags |= MSG_EOR;
+ if ((control->do_not_ref_stcb == 0) &&
+ (control->stcb != NULL) &&
+ ((control->spec_flags & M_NOTIFICATION) == 0))
+ control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
+ }
+ if (control->spec_flags & M_NOTIFICATION) {
+ out_flags |= MSG_NOTIFICATION;
+ }
+#if defined(__APPLE__)
+#if defined(APPLE_LEOPARD)
+ uio->uio_resid = control->length;
+#else
+ uio_setresid(uio, control->length);
+#endif
+#else
+ uio->uio_resid = control->length;
+#endif
+ *mp = control->data;
+ m = control->data;
+ while (m) {
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
+ sctp_sblog(&so->so_rcv,
+ control->do_not_ref_stcb?NULL:stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
+ }
+ sctp_sbfree(control, stcb, &so->so_rcv, m);
+ freed_so_far += SCTP_BUF_LEN(m);
+ freed_so_far += MSIZE;
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
+ sctp_sblog(&so->so_rcv,
+ control->do_not_ref_stcb?NULL:stcb, SCTP_LOG_SBRESULT, 0);
+ }
+ m = SCTP_BUF_NEXT(m);
+ }
+ control->data = control->tail_mbuf = NULL;
+ control->length = 0;
+ if (out_flags & MSG_EOR) {
+ /* Done with this control */
+ goto done_with_control;
+ }
+ }
+ release:
+ if (hold_rlock == 1) {
+ SCTP_INP_READ_UNLOCK(inp);
+ hold_rlock = 0;
+ }
+#if (defined(__FreeBSD__) && __FreeBSD_version < 700000) || defined(__Userspace__)
+ if (hold_sblock == 0) {
+ SOCKBUF_LOCK(&so->so_rcv);
+ hold_sblock = 1;
+ }
+#else
+ if (hold_sblock == 1) {
+ SOCKBUF_UNLOCK(&so->so_rcv);
+ hold_sblock = 0;
+ }
+#endif
+#if defined(__APPLE__)
+ sbunlock(&so->so_rcv, 1);
+#endif
+
+#if defined(__FreeBSD__)
+ sbunlock(&so->so_rcv);
+#if defined(__FreeBSD__) && __FreeBSD_version >= 700000
+ sockbuf_lock = 0;
+#endif
+#endif
+
+ release_unlocked:
+ if (hold_sblock) {
+ SOCKBUF_UNLOCK(&so->so_rcv);
+ hold_sblock = 0;
+ }
+ if ((stcb) && (in_flags & MSG_PEEK) == 0) {
+ if ((freed_so_far >= rwnd_req) &&
+ (control && (control->do_not_ref_stcb == 0)) &&
+ (no_rcv_needed == 0))
+ sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
+ }
+ out:
+ if (msg_flags) {
+ *msg_flags = out_flags;
+ }
+ if (((out_flags & MSG_EOR) == 0) &&
+ ((in_flags & MSG_PEEK) == 0) &&
+ (sinfo) &&
+ (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
+ sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
+ struct sctp_extrcvinfo *s_extra;
+ s_extra = (struct sctp_extrcvinfo *)sinfo;
+ s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
+ }
+ if (hold_rlock == 1) {
+ SCTP_INP_READ_UNLOCK(inp);
+ }
+ if (hold_sblock) {
+ SOCKBUF_UNLOCK(&so->so_rcv);
+ }
+#if defined(__FreeBSD__) && __FreeBSD_version >= 700000
+ if (sockbuf_lock) {
+ sbunlock(&so->so_rcv);
+ }
+#endif
+
+ if (freecnt_applied) {
+ /*
+ * The lock on the socket buffer protects us so the free
+ * code will stop. But since we used the socketbuf lock and
+ * the sender uses the tcb_lock to increment, we need to use
+ * the atomic add to the refcnt.
+ */
+ if (stcb == NULL) {
+#ifdef INVARIANTS
+ panic("stcb for refcnt has gone NULL?");
+ goto stage_left;
+#else
+ goto stage_left;
+#endif
+ }
+ /* Save the value back for next time */
+ stcb->freed_by_sorcv_sincelast = freed_so_far;
+ atomic_add_int(&stcb->asoc.refcnt, -1);
+ }
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) &SCTP_RECV_RWND_LOGGING_ENABLE) {
+ if (stcb) {
+ sctp_misc_ints(SCTP_SORECV_DONE,
+ freed_so_far,
+#if defined(__APPLE__)
+#if defined(APPLE_LEOPARD)
+ ((uio) ? (slen - uio->uio_resid) : slen),
+#else
+ ((uio) ? (slen - uio_resid(uio)) : slen),
+#endif
+#else
+ (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
+#endif
+ stcb->asoc.my_rwnd,
+ so->so_rcv.sb_cc);
+ } else {
+ sctp_misc_ints(SCTP_SORECV_DONE,
+ freed_so_far,
+#if defined(__APPLE__)
+#if defined(APPLE_LEOPARD)
+ ((uio) ? (slen - uio->uio_resid) : slen),
+#else
+ ((uio) ? (slen - uio_resid(uio)) : slen),
+#endif
+#else
+ (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
+#endif
+ 0,
+ so->so_rcv.sb_cc);
+ }
+ }
+ stage_left:
+ if (wakeup_read_socket) {
+ sctp_sorwakeup(inp, so);
+ }
+ return (error);
+}
+
+
+#ifdef SCTP_MBUF_LOGGING
+struct mbuf *
+sctp_m_free(struct mbuf *m)
+{
+ if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
+ sctp_log_mb(m, SCTP_MBUF_IFREE);
+ }
+ return (m_free(m));
+}
+
+void sctp_m_freem(struct mbuf *mb)
+{
+ while (mb != NULL)
+ mb = sctp_m_free(mb);
+}
+
+#endif
+
+int
+sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
+{
+ /* Given a local address. For all associations
+ * that holds the address, request a peer-set-primary.
+ */
+ struct sctp_ifa *ifa;
+ struct sctp_laddr *wi;
+
+ ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0);
+ if (ifa == NULL) {
+ SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
+ return (EADDRNOTAVAIL);
+ }
+ /* Now that we have the ifa we must awaken the
+ * iterator with this message.
+ */
+ wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
+ if (wi == NULL) {
+ SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
+ return (ENOMEM);
+ }
+ /* Now incr the count and int wi structure */
+ SCTP_INCR_LADDR_COUNT();
+ bzero(wi, sizeof(*wi));
+ (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
+ wi->ifa = ifa;
+ wi->action = SCTP_SET_PRIM_ADDR;
+ atomic_add_int(&ifa->refcount, 1);
+
+ /* Now add it to the work queue */
+ SCTP_WQ_ADDR_LOCK();
+ /*
+ * Should this really be a tailq? As it is we will process the
+ * newest first :-0
+ */
+ LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
+ SCTP_WQ_ADDR_UNLOCK();
+ sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
+ (struct sctp_inpcb *)NULL,
+ (struct sctp_tcb *)NULL,
+ (struct sctp_nets *)NULL);
+ return (0);
+}
+
+#if defined(__Userspace__)
+/* no sctp_soreceive for __Userspace__ now */
+#endif
+
+#if !defined(__Userspace__)
+int
+sctp_soreceive( struct socket *so,
+ struct sockaddr **psa,
+ struct uio *uio,
+ struct mbuf **mp0,
+ struct mbuf **controlp,
+ int *flagsp)
+{
+ int error, fromlen;
+ uint8_t sockbuf[256];
+ struct sockaddr *from;
+ struct sctp_extrcvinfo sinfo;
+ int filling_sinfo = 1;
+ struct sctp_inpcb *inp;
+
+ inp = (struct sctp_inpcb *)so->so_pcb;
+ /* pickup the assoc we are reading from */
+ if (inp == NULL) {
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ return (EINVAL);
+ }
+ if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
+ sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
+ sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
+ (controlp == NULL)) {
+ /* user does not want the sndrcv ctl */
+ filling_sinfo = 0;
+ }
+ if (psa) {
+ from = (struct sockaddr *)sockbuf;
+ fromlen = sizeof(sockbuf);
+#ifdef HAVE_SA_LEN
+ from->sa_len = 0;
+#endif
+ } else {
+ from = NULL;
+ fromlen = 0;
+ }
+
+#if defined(__APPLE__)
+ SCTP_SOCKET_LOCK(so, 1);
+#endif
+ if (filling_sinfo) {
+ memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
+ }
+ error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp,
+ (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
+ if (controlp != NULL) {
+ /* copy back the sinfo in a CMSG format */
+ if (filling_sinfo)
+ *controlp = sctp_build_ctl_nchunk(inp,
+ (struct sctp_sndrcvinfo *)&sinfo);
+ else
+ *controlp = NULL;
+ }
+ if (psa) {
+ /* copy back the address info */
+#ifdef HAVE_SA_LEN
+ if (from && from->sa_len) {
+#else
+ if (from) {
+#endif
+#if (defined(__FreeBSD__) && __FreeBSD_version > 500000) || defined(__Windows__)
+ *psa = sodupsockaddr(from, M_NOWAIT);
+#else
+ *psa = dup_sockaddr(from, mp0 == 0);
+#endif
+ } else {
+ *psa = NULL;
+ }
+ }
+#if defined(__APPLE__)
+ SCTP_SOCKET_UNLOCK(so, 1);
+#endif
+ return (error);
+}
+
+
+#if (defined(__FreeBSD__) && __FreeBSD_version < 603000) || defined(__Windows__)
+/*
+ * General routine to allocate a hash table with control of memory flags.
+ * is in 7.0 and beyond for sure :-)
+ */
+void *
+sctp_hashinit_flags(int elements, struct malloc_type *type,
+ u_long *hashmask, int flags)
+{
+ long hashsize;
+ LIST_HEAD(generic, generic) *hashtbl;
+ int i;
+
+
+ if (elements <= 0) {
+#ifdef INVARIANTS
+ panic("hashinit: bad elements");
+#else
+ SCTP_PRINTF("hashinit: bad elements?");
+ elements = 1;
+#endif
+ }
+ for (hashsize = 1; hashsize <= elements; hashsize <<= 1)
+ continue;
+ hashsize >>= 1;
+ if (flags & HASH_WAITOK)
+ hashtbl = malloc((u_long)hashsize * sizeof(*hashtbl), type, M_WAITOK);
+ else if (flags & HASH_NOWAIT)
+ hashtbl = malloc((u_long)hashsize * sizeof(*hashtbl), type, M_NOWAIT);
+ else {
+#ifdef INVARIANTS
+ panic("flag incorrect in hashinit_flags");
+#else
+ return (NULL);
+#endif
+ }
+
+ /* no memory? */
+ if (hashtbl == NULL)
+ return (NULL);
+
+ for (i = 0; i < hashsize; i++)
+ LIST_INIT(&hashtbl[i]);
+ *hashmask = hashsize - 1;
+ return (hashtbl);
+}
+#endif
+
+#else /* __Userspace__ ifdef above sctp_soreceive */
+/*
+ * __Userspace__ Defining sctp_hashinit_flags() and sctp_hashdestroy() for userland.
+ * NOTE: We don't want multiple definitions here. So sctp_hashinit_flags() above for
+ *__FreeBSD__ must be excluded.
+ *
+ */
+
+void *
+sctp_hashinit_flags(int elements, struct malloc_type *type,
+ u_long *hashmask, int flags)
+{
+ long hashsize;
+ LIST_HEAD(generic, generic) *hashtbl;
+ int i;
+
+ if (elements <= 0) {
+ SCTP_PRINTF("hashinit: bad elements?");
+#ifdef INVARIANTS
+ return (NULL);
+#else
+ elements = 1;
+#endif
+ }
+ for (hashsize = 1; hashsize <= elements; hashsize <<= 1)
+ continue;
+ hashsize >>= 1;
+ /*cannot use MALLOC here because it has to be declared or defined
+ using MALLOC_DECLARE or MALLOC_DEFINE first. */
+ if (flags & HASH_WAITOK)
+ hashtbl = malloc((u_long)hashsize * sizeof(*hashtbl));
+ else if (flags & HASH_NOWAIT)
+ hashtbl = malloc((u_long)hashsize * sizeof(*hashtbl));
+ else {
+#ifdef INVARIANTS
+ SCTP_PRINTF("flag incorrect in hashinit_flags.\n");
+#endif
+ return (NULL);
+ }
+
+ /* no memory? */
+ if (hashtbl == NULL)
+ return (NULL);
+
+ for (i = 0; i < hashsize; i++)
+ LIST_INIT(&hashtbl[i]);
+ *hashmask = hashsize - 1;
+ return (hashtbl);
+}
+
+
+void
+sctp_hashdestroy(void *vhashtbl, struct malloc_type *type, u_long hashmask)
+{
+ LIST_HEAD(generic, generic) *hashtbl, *hp;
+
+ hashtbl = vhashtbl;
+ for (hp = hashtbl; hp <= &hashtbl[hashmask]; hp++)
+ if (!LIST_EMPTY(hp)) {
+ SCTP_PRINTF("hashdestroy: hash not empty.\n");
+ return;
+ }
+ FREE(hashtbl, type);
+}
+
+
+void
+sctp_hashfreedestroy(void *vhashtbl, struct malloc_type *type, u_long hashmask)
+{
+ LIST_HEAD(generic, generic) *hashtbl/*, *hp*/;
+ /*
+ LIST_ENTRY(type) *start, *temp;
+ */
+ hashtbl = vhashtbl;
+ /* Apparently temp is not dynamically allocated, so attempts to
+ free it results in error.
+ for (hp = hashtbl; hp <= &hashtbl[hashmask]; hp++)
+ if (!LIST_EMPTY(hp)) {
+ start = LIST_FIRST(hp);
+ while (start != NULL) {
+ temp = start;
+ start = start->le_next;
+ SCTP_PRINTF("%s: %p \n", __func__, (void *)temp);
+ FREE(temp, type);
+ }
+ }
+ */
+ FREE(hashtbl, type);
+}
+
+
+#endif
+
+
+int
+sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
+ int totaddr, int *error)
+{
+ int added = 0;
+ int i;
+ struct sctp_inpcb *inp;
+ struct sockaddr *sa;
+ size_t incr = 0;
+#ifdef INET
+ struct sockaddr_in *sin;
+#endif
+#ifdef INET6
+ struct sockaddr_in6 *sin6;
+#endif
+
+ sa = addr;
+ inp = stcb->sctp_ep;
+ *error = 0;
+ for (i = 0; i < totaddr; i++) {
+ switch (sa->sa_family) {
+#ifdef INET
+ case AF_INET:
+ incr = sizeof(struct sockaddr_in);
+ sin = (struct sockaddr_in *)sa;
+ if ((sin->sin_addr.s_addr == INADDR_ANY) ||
+ (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
+ IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
+ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
+ SCTP_FROM_SCTPUTIL + SCTP_LOC_7);
+ *error = EINVAL;
+ goto out_now;
+ }
+ if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
+ SCTP_DONOT_SETSCOPE,
+ SCTP_ADDR_IS_CONFIRMED)) {
+ /* assoc gone no un-lock */
+ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
+ (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
+ SCTP_FROM_SCTPUTIL + SCTP_LOC_8);
+ *error = ENOBUFS;
+ goto out_now;
+ }
+ added++;
+ break;
+#endif
+#ifdef INET6
+ case AF_INET6:
+ incr = sizeof(struct sockaddr_in6);
+ sin6 = (struct sockaddr_in6 *)sa;
+ if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
+ IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
+ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
+ SCTP_FROM_SCTPUTIL + SCTP_LOC_9);
+ *error = EINVAL;
+ goto out_now;
+ }
+ if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
+ SCTP_DONOT_SETSCOPE,
+ SCTP_ADDR_IS_CONFIRMED)) {
+ /* assoc gone no un-lock */
+ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
+ (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
+ SCTP_FROM_SCTPUTIL + SCTP_LOC_10);
+ *error = ENOBUFS;
+ goto out_now;
+ }
+ added++;
+ break;
+#endif
+#if defined(__Userspace__)
+ case AF_CONN:
+ incr = sizeof(struct sockaddr_in6);
+ if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
+ SCTP_DONOT_SETSCOPE,
+ SCTP_ADDR_IS_CONFIRMED)) {
+ /* assoc gone no un-lock */
+ SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
+ (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
+ SCTP_FROM_SCTPUTIL + SCTP_LOC_11);
+ *error = ENOBUFS;
+ goto out_now;
+ }
+ added++;
+ break;
+#endif
+ default:
+ break;
+ }
+ sa = (struct sockaddr *)((caddr_t)sa + incr);
+ }
+ out_now:
+ return (added);
+}
+
+struct sctp_tcb *
+sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
+ unsigned int *totaddr,
+ unsigned int *num_v4, unsigned int *num_v6, int *error,
+ unsigned int limit, int *bad_addr)
+{
+ struct sockaddr *sa;
+ struct sctp_tcb *stcb = NULL;
+ unsigned int incr, at, i;
+
+ at = 0;
+ sa = addr;
+ *error = *num_v6 = *num_v4 = 0;
+ /* account and validate addresses */
+ for (i = 0; i < *totaddr; i++) {
+ switch (sa->sa_family) {
+#ifdef INET
+ case AF_INET:
+ incr = (unsigned int)sizeof(struct sockaddr_in);
+#ifdef HAVE_SA_LEN
+ if (sa->sa_len != incr) {
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ *error = EINVAL;
+ *bad_addr = 1;
+ return (NULL);
+ }
+#endif
+ (*num_v4) += 1;
+ break;
+#endif
+#ifdef INET6
+ case AF_INET6:
+ {
+ struct sockaddr_in6 *sin6;
+
+ sin6 = (struct sockaddr_in6 *)sa;
+ if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
+ /* Must be non-mapped for connectx */
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ *error = EINVAL;
+ *bad_addr = 1;
+ return (NULL);
+ }
+ incr = (unsigned int)sizeof(struct sockaddr_in6);
+#ifdef HAVE_SA_LEN
+ if (sa->sa_len != incr) {
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ *error = EINVAL;
+ *bad_addr = 1;
+ return (NULL);
+ }
+#endif
+ (*num_v6) += 1;
+ break;
+ }
+#endif
+ default:
+ *totaddr = i;
+ incr = 0;
+ /* we are done */
+ break;
+ }
+ if (i == *totaddr) {
+ break;
+ }
+ SCTP_INP_INCR_REF(inp);
+ stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
+ if (stcb != NULL) {
+ /* Already have or am bring up an association */
+ return (stcb);
+ } else {
+ SCTP_INP_DECR_REF(inp);
+ }
+ if ((at + incr) > limit) {
+ *totaddr = i;
+ break;
+ }
+ sa = (struct sockaddr *)((caddr_t)sa + incr);
+ }
+ return ((struct sctp_tcb *)NULL);
+}
+
+/*
+ * sctp_bindx(ADD) for one address.
+ * assumes all arguments are valid/checked by caller.
+ */
+void
+sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
+ struct sockaddr *sa, sctp_assoc_t assoc_id,
+ uint32_t vrf_id, int *error, void *p)
+{
+ struct sockaddr *addr_touse;
+#if defined(INET) && defined(INET6)
+ struct sockaddr_in sin;
+#endif
+#ifdef SCTP_MVRF
+ int i, fnd = 0;
+#endif
+
+ /* see if we're bound all already! */
+ if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ *error = EINVAL;
+ return;
+ }
+#ifdef SCTP_MVRF
+ /* Is the VRF one we have */
+ for (i = 0; i < inp->num_vrfs; i++) {
+ if (vrf_id == inp->m_vrf_ids[i]) {
+ fnd = 1;
+ break;
+ }
+ }
+ if (!fnd) {
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ *error = EINVAL;
+ return;
+ }
+#endif
+ addr_touse = sa;
+#ifdef INET6
+ if (sa->sa_family == AF_INET6) {
+#ifdef INET
+ struct sockaddr_in6 *sin6;
+
+#endif
+#ifdef HAVE_SA_LEN
+ if (sa->sa_len != sizeof(struct sockaddr_in6)) {
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ *error = EINVAL;
+ return;
+ }
+#endif
+ if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
+ /* can only bind v6 on PF_INET6 sockets */
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ *error = EINVAL;
+ return;
+ }
+#ifdef INET
+ sin6 = (struct sockaddr_in6 *)addr_touse;
+ if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
+ if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
+ SCTP_IPV6_V6ONLY(inp)) {
+ /* can't bind v4-mapped on PF_INET sockets */
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ *error = EINVAL;
+ return;
+ }
+ in6_sin6_2_sin(&sin, sin6);
+ addr_touse = (struct sockaddr *)&sin;
+ }
+#endif
+ }
+#endif
+#ifdef INET
+ if (sa->sa_family == AF_INET) {
+#ifdef HAVE_SA_LEN
+ if (sa->sa_len != sizeof(struct sockaddr_in)) {
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ *error = EINVAL;
+ return;
+ }
+#endif
+ if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
+ SCTP_IPV6_V6ONLY(inp)) {
+ /* can't bind v4 on PF_INET sockets */
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ *error = EINVAL;
+ return;
+ }
+ }
+#endif
+ if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
+#if !(defined(__Panda__) || defined(__Windows__) || defined(__Userspace__))
+ if (p == NULL) {
+ /* Can't get proc for Net/Open BSD */
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ *error = EINVAL;
+ return;
+ }
+#endif
+ *error = sctp_inpcb_bind(so, addr_touse, NULL, p);
+ return;
+ }
+ /*
+ * No locks required here since bind and mgmt_ep_sa
+ * all do their own locking. If we do something for
+ * the FIX: below we may need to lock in that case.
+ */
+ if (assoc_id == 0) {
+ /* add the address */
+ struct sctp_inpcb *lep;
+ struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse;
+
+ /* validate the incoming port */
+ if ((lsin->sin_port != 0) &&
+ (lsin->sin_port != inp->sctp_lport)) {
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ *error = EINVAL;
+ return;
+ } else {
+ /* user specified 0 port, set it to existing port */
+ lsin->sin_port = inp->sctp_lport;
+ }
+
+ lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id);
+ if (lep != NULL) {
+ /*
+ * We must decrement the refcount
+ * since we have the ep already and
+ * are binding. No remove going on
+ * here.
+ */
+ SCTP_INP_DECR_REF(lep);
+ }
+ if (lep == inp) {
+ /* already bound to it.. ok */
+ return;
+ } else if (lep == NULL) {
+ ((struct sockaddr_in *)addr_touse)->sin_port = 0;
+ *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
+ SCTP_ADD_IP_ADDRESS,
+ vrf_id, NULL);
+ } else {
+ *error = EADDRINUSE;
+ }
+ if (*error)
+ return;
+ } else {
+ /*
+ * FIX: decide whether we allow assoc based
+ * bindx
+ */
+ }
+}
+
+/*
+ * sctp_bindx(DELETE) for one address.
+ * assumes all arguments are valid/checked by caller.
+ */
+void
+sctp_bindx_delete_address(struct sctp_inpcb *inp,
+ struct sockaddr *sa, sctp_assoc_t assoc_id,
+ uint32_t vrf_id, int *error)
+{
+ struct sockaddr *addr_touse;
+#if defined(INET) && defined(INET6)
+ struct sockaddr_in sin;
+#endif
+#ifdef SCTP_MVRF
+ int i, fnd = 0;
+#endif
+
+ /* see if we're bound all already! */
+ if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ *error = EINVAL;
+ return;
+ }
+#ifdef SCTP_MVRF
+ /* Is the VRF one we have */
+ for (i = 0; i < inp->num_vrfs; i++) {
+ if (vrf_id == inp->m_vrf_ids[i]) {
+ fnd = 1;
+ break;
+ }
+ }
+ if (!fnd) {
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ *error = EINVAL;
+ return;
+ }
+#endif
+ addr_touse = sa;
+#ifdef INET6
+ if (sa->sa_family == AF_INET6) {
+#ifdef INET
+ struct sockaddr_in6 *sin6;
+#endif
+
+#ifdef HAVE_SA_LEN
+ if (sa->sa_len != sizeof(struct sockaddr_in6)) {
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ *error = EINVAL;
+ return;
+ }
+#endif
+ if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
+ /* can only bind v6 on PF_INET6 sockets */
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ *error = EINVAL;
+ return;
+ }
+#ifdef INET
+ sin6 = (struct sockaddr_in6 *)addr_touse;
+ if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
+ if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
+ SCTP_IPV6_V6ONLY(inp)) {
+ /* can't bind mapped-v4 on PF_INET sockets */
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ *error = EINVAL;
+ return;
+ }
+ in6_sin6_2_sin(&sin, sin6);
+ addr_touse = (struct sockaddr *)&sin;
+ }
+#endif
+ }
+#endif
+#ifdef INET
+ if (sa->sa_family == AF_INET) {
+#ifdef HAVE_SA_LEN
+ if (sa->sa_len != sizeof(struct sockaddr_in)) {
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ *error = EINVAL;
+ return;
+ }
+#endif
+ if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
+ SCTP_IPV6_V6ONLY(inp)) {
+ /* can't bind v4 on PF_INET sockets */
+ SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
+ *error = EINVAL;
+ return;
+ }
+ }
+#endif
+ /*
+ * No lock required mgmt_ep_sa does its own locking.
+ * If the FIX: below is ever changed we may need to
+ * lock before calling association level binding.
+ */
+ if (assoc_id == 0) {
+ /* delete the address */
+ *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
+ SCTP_DEL_IP_ADDRESS,
+ vrf_id, NULL);
+ } else {
+ /*
+ * FIX: decide whether we allow assoc based
+ * bindx
+ */
+ }
+}
+
+/*
+ * returns the valid local address count for an assoc, taking into account
+ * all scoping rules
+ */
+int
+sctp_local_addr_count(struct sctp_tcb *stcb)
+{
+ int loopback_scope;
+#if defined(INET)
+ int ipv4_local_scope, ipv4_addr_legal;
+#endif
+#if defined (INET6)
+ int local_scope, site_scope, ipv6_addr_legal;
+#endif
+#if defined(__Userspace__)
+ int conn_addr_legal;
+#endif
+ struct sctp_vrf *vrf;
+ struct sctp_ifn *sctp_ifn;
+ struct sctp_ifa *sctp_ifa;
+ int count = 0;
+
+ /* Turn on all the appropriate scopes */
+ loopback_scope = stcb->asoc.scope.loopback_scope;
+#if defined(INET)
+ ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
+ ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
+#endif
+#if defined(INET6)
+ local_scope = stcb->asoc.scope.local_scope;
+ site_scope = stcb->asoc.scope.site_scope;
+ ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
+#endif
+#if defined(__Userspace__)
+ conn_addr_legal = stcb->asoc.scope.conn_addr_legal;
+#endif
+ SCTP_IPI_ADDR_RLOCK();
+ vrf = sctp_find_vrf(stcb->asoc.vrf_id);
+ if (vrf == NULL) {
+ /* no vrf, no addresses */
+ SCTP_IPI_ADDR_RUNLOCK();
+ return (0);
+ }
+
+ if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
+ /*
+ * bound all case: go through all ifns on the vrf
+ */
+ LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
+ if ((loopback_scope == 0) &&
+ SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
+ continue;
+ }
+ LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
+ if (sctp_is_addr_restricted(stcb, sctp_ifa))
+ continue;
+ switch (sctp_ifa->address.sa.sa_family) {
+#ifdef INET
+ case AF_INET:
+ if (ipv4_addr_legal) {
+ struct sockaddr_in *sin;
+
+ sin = &sctp_ifa->address.sin;
+ if (sin->sin_addr.s_addr == 0) {
+ /* skip unspecified addrs */
+ continue;
+ }
+#if defined(__FreeBSD__)
+ if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
+ &sin->sin_addr) != 0) {
+ continue;
+ }
+#endif
+ if ((ipv4_local_scope == 0) &&
+ (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
+ continue;
+ }
+ /* count this one */
+ count++;
+ } else {
+ continue;
+ }
+ break;
+#endif
+#ifdef INET6
+ case AF_INET6:
+ if (ipv6_addr_legal) {
+ struct sockaddr_in6 *sin6;
+
+#if defined(SCTP_EMBEDDED_V6_SCOPE) && !defined(SCTP_KAME)
+ struct sockaddr_in6 lsa6;
+#endif
+ sin6 = &sctp_ifa->address.sin6;
+ if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
+ continue;
+ }
+#if defined(__FreeBSD__)
+ if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
+ &sin6->sin6_addr) != 0) {
+ continue;
+ }
+#endif
+ if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
+ if (local_scope == 0)
+ continue;
+#if defined(SCTP_EMBEDDED_V6_SCOPE)
+ if (sin6->sin6_scope_id == 0) {
+#ifdef SCTP_KAME
+ if (sa6_recoverscope(sin6) != 0)
+ /*
+ * bad link
+ * local
+ * address
+ */
+ continue;
+#else
+ lsa6 = *sin6;
+ if (in6_recoverscope(&lsa6,
+ &lsa6.sin6_addr,
+ NULL))
+ /*
+ * bad link
+ * local
+ * address
+ */
+ continue;
+ sin6 = &lsa6;
+#endif /* SCTP_KAME */
+ }
+#endif /* SCTP_EMBEDDED_V6_SCOPE */
+ }
+ if ((site_scope == 0) &&
+ (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
+ continue;
+ }
+ /* count this one */
+ count++;
+ }
+ break;
+#endif
+#if defined(__Userspace__)
+ case AF_CONN:
+ if (conn_addr_legal) {
+ count++;
+ }
+ break;
+#endif
+ default:
+ /* TSNH */
+ break;
+ }
+ }
+ }
+ } else {
+ /*
+ * subset bound case
+ */
+ struct sctp_laddr *laddr;
+ LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
+ sctp_nxt_addr) {
+ if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
+ continue;
+ }
+ /* count this one */
+ count++;
+ }
+ }
+ SCTP_IPI_ADDR_RUNLOCK();
+ return (count);
+}
+
+#if defined(SCTP_LOCAL_TRACE_BUF)
+
+void
+sctp_log_trace(uint32_t subsys, const char *str SCTP_UNUSED, uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint32_t e, uint32_t f)
+{
+ uint32_t saveindex, newindex;
+
+#if defined(__Windows__)
+ if (SCTP_BASE_SYSCTL(sctp_log) == NULL) {
+ return;
+ }
+ do {
+ saveindex = SCTP_BASE_SYSCTL(sctp_log)->index;
+ if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
+ newindex = 1;
+ } else {
+ newindex = saveindex + 1;
+ }
+ } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log)->index, saveindex, newindex) == 0);
+ if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
+ saveindex = 0;
+ }
+ SCTP_BASE_SYSCTL(sctp_log)->entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
+ SCTP_BASE_SYSCTL(sctp_log)->entry[saveindex].subsys = subsys;
+ SCTP_BASE_SYSCTL(sctp_log)->entry[saveindex].params[0] = a;
+ SCTP_BASE_SYSCTL(sctp_log)->entry[saveindex].params[1] = b;
+ SCTP_BASE_SYSCTL(sctp_log)->entry[saveindex].params[2] = c;
+ SCTP_BASE_SYSCTL(sctp_log)->entry[saveindex].params[3] = d;
+ SCTP_BASE_SYSCTL(sctp_log)->entry[saveindex].params[4] = e;
+ SCTP_BASE_SYSCTL(sctp_log)->entry[saveindex].params[5] = f;
+#else
+ do {
+ saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
+ if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
+ newindex = 1;
+ } else {
+ newindex = saveindex + 1;
+ }
+ } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
+ if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
+ saveindex = 0;
+ }
+ SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
+ SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
+ SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
+ SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
+ SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
+ SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
+ SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
+ SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
+#endif
+}
+
+#endif
+#if defined(__FreeBSD__)
+#if __FreeBSD_version >= 800044
+static void
+sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *inp,
+ const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED)
+{
+ struct ip *iph;
+#ifdef INET6
+ struct ip6_hdr *ip6;
+#endif
+ struct mbuf *sp, *last;
+ struct udphdr *uhdr;
+ uint16_t port;
+
+ if ((m->m_flags & M_PKTHDR) == 0) {
+ /* Can't handle one that is not a pkt hdr */
+ goto out;
+ }
+ /* Pull the src port */
+ iph = mtod(m, struct ip *);
+ uhdr = (struct udphdr *)((caddr_t)iph + off);
+ port = uhdr->uh_sport;
+ /* Split out the mbuf chain. Leave the
+ * IP header in m, place the
+ * rest in the sp.
+ */
+ sp = m_split(m, off, M_NOWAIT);
+ if (sp == NULL) {
+ /* Gak, drop packet, we can't do a split */
+ goto out;
+ }
+ if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
+ /* Gak, packet can't have an SCTP header in it - too small */
+ m_freem(sp);
+ goto out;
+ }
+ /* Now pull up the UDP header and SCTP header together */
+ sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
+ if (sp == NULL) {
+ /* Gak pullup failed */
+ goto out;
+ }
+ /* Trim out the UDP header */
+ m_adj(sp, sizeof(struct udphdr));
+
+ /* Now reconstruct the mbuf chain */
+ for (last = m; last->m_next; last = last->m_next);
+ last->m_next = sp;
+ m->m_pkthdr.len += sp->m_pkthdr.len;
+ /*
+ * The CSUM_DATA_VALID flags indicates that the HW checked the
+ * UDP checksum and it was valid.
+ * Since CSUM_DATA_VALID == CSUM_SCTP_VALID this would imply that
+ * the HW also verified the SCTP checksum. Therefore, clear the bit.
+ */
+#if __FreeBSD_version > 1000049
+ SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
+ "sctp_recv_udp_tunneled_packet(): Packet of length %d received on %s with csum_flags 0x%b.\n",
+ m->m_pkthdr.len,
+ if_name(m->m_pkthdr.rcvif),
+ (int)m->m_pkthdr.csum_flags, CSUM_BITS);
+#else
+ SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
+ "sctp_recv_udp_tunneled_packet(): Packet of length %d received on %s with csum_flags 0x%x.\n",
+ m->m_pkthdr.len,
+ if_name(m->m_pkthdr.rcvif),
+ m->m_pkthdr.csum_flags);
+#endif
+ m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID;
+ iph = mtod(m, struct ip *);
+ switch (iph->ip_v) {
+#ifdef INET
+ case IPVERSION:
+#if __FreeBSD_version >= 1000000
+ iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr));
+#else
+ iph->ip_len -= sizeof(struct udphdr);
+#endif
+ sctp_input_with_port(m, off, port);
+ break;
+#endif
+#ifdef INET6
+ case IPV6_VERSION >> 4:
+ ip6 = mtod(m, struct ip6_hdr *);
+ ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
+ sctp6_input_with_port(&m, &off, port);
+ break;
+#endif
+ default:
+ goto out;
+ break;
+ }
+ return;
+ out:
+ m_freem(m);
+}
+#endif
+
+#if __FreeBSD_version >= 1100000
+#ifdef INET
+static void
+sctp_recv_icmp_tunneled_packet(int cmd, struct sockaddr *sa, void *vip, void *ctx SCTP_UNUSED)
+{
+ struct ip *outer_ip, *inner_ip;
+ struct sctphdr *sh;
+ struct icmp *icmp;
+ struct udphdr *udp;
+ struct sctp_inpcb *inp;
+ struct sctp_tcb *stcb;
+ struct sctp_nets *net;
+ struct sctp_init_chunk *ch;
+ struct sockaddr_in src, dst;
+ uint8_t type, code;
+
+ inner_ip = (struct ip *)vip;
+ icmp = (struct icmp *)((caddr_t)inner_ip -
+ (sizeof(struct icmp) - sizeof(struct ip)));
+ outer_ip = (struct ip *)((caddr_t)icmp - sizeof(struct ip));
+ if (ntohs(outer_ip->ip_len) <
+ sizeof(struct ip) + 8 + (inner_ip->ip_hl << 2) + sizeof(struct udphdr) + 8) {
+ return;
+ }
+ udp = (struct udphdr *)((caddr_t)inner_ip + (inner_ip->ip_hl << 2));
+ sh = (struct sctphdr *)(udp + 1);
+ memset(&src, 0, sizeof(struct sockaddr_in));
+ src.sin_family = AF_INET;
+#ifdef HAVE_SIN_LEN
+ src.sin_len = sizeof(struct sockaddr_in);
+#endif
+ src.sin_port = sh->src_port;
+ src.sin_addr = inner_ip->ip_src;
+ memset(&dst, 0, sizeof(struct sockaddr_in));
+ dst.sin_family = AF_INET;
+#ifdef HAVE_SIN_LEN
+ dst.sin_len = sizeof(struct sockaddr_in);
+#endif
+ dst.sin_port = sh->dest_port;
+ dst.sin_addr = inner_ip->ip_dst;
+ /*
+ * 'dst' holds the dest of the packet that failed to be sent.
+ * 'src' holds our local endpoint address. Thus we reverse
+ * the dst and the src in the lookup.
+ */
+ inp = NULL;
+ net = NULL;
+ stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
+ (struct sockaddr *)&src,
+ &inp, &net, 1,
+ SCTP_DEFAULT_VRFID);
+ if ((stcb != NULL) &&
+ (net != NULL) &&
+ (inp != NULL)) {
+ /* Check the UDP port numbers */
+ if ((udp->uh_dport != net->port) ||
+ (udp->uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
+ SCTP_TCB_UNLOCK(stcb);
+ return;
+ }
+ /* Check the verification tag */
+ if (ntohl(sh->v_tag) != 0) {
+ /*
+ * This must be the verification tag used
+ * for sending out packets. We don't
+ * consider packets reflecting the
+ * verification tag.
+ */
+ if (ntohl(sh->v_tag) != stcb->asoc.peer_vtag) {
+ SCTP_TCB_UNLOCK(stcb);
+ return;
+ }
+ } else {
+ if (ntohs(outer_ip->ip_len) >=
+ sizeof(struct ip) +
+ 8 + (inner_ip->ip_hl << 2) + 8 + 20) {
+ /*
+ * In this case we can check if we
+ * got an INIT chunk and if the
+ * initiate tag matches.
+ */
+ ch = (struct sctp_init_chunk *)(sh + 1);
+ if ((ch->ch.chunk_type != SCTP_INITIATION) ||
+ (ntohl(ch->init.initiate_tag) != stcb->asoc.my_vtag)) {
+ SCTP_TCB_UNLOCK(stcb);
+ return;
+ }
+ } else {
+ SCTP_TCB_UNLOCK(stcb);
+ return;
+ }
+ }
+ type = icmp->icmp_type;
+ code = icmp->icmp_code;
+ if ((type == ICMP_UNREACH) &&
+ (code == ICMP_UNREACH_PORT)) {
+ code = ICMP_UNREACH_PROTOCOL;
+ }
+ sctp_notify(inp, stcb, net, type, code,
+ ntohs(inner_ip->ip_len),
+ ntohs(icmp->icmp_nextmtu));
+ } else {
+#if defined(__FreeBSD__) && __FreeBSD_version < 500000
+ /*
+ * XXX must be fixed for 5.x and higher, leave for
+ * 4.x
+ */
+ if (PRC_IS_REDIRECT(cmd) && (inp != NULL)) {
+ in_rtchange((struct inpcb *)inp,
+ inetctlerrmap[cmd]);
+ }
+#endif
+ if ((stcb == NULL) && (inp != NULL)) {
+ /* reduce ref-count */
+ SCTP_INP_WLOCK(inp);
+ SCTP_INP_DECR_REF(inp);
+ SCTP_INP_WUNLOCK(inp);
+ }
+ if (stcb) {
+ SCTP_TCB_UNLOCK(stcb);
+ }
+ }
+ return;
+}
+#endif
+
+#ifdef INET6
+static void
+sctp_recv_icmp6_tunneled_packet(int cmd, struct sockaddr *sa, void *d, void *ctx SCTP_UNUSED)
+{
+ struct ip6ctlparam *ip6cp;
+ struct sctp_inpcb *inp;
+ struct sctp_tcb *stcb;
+ struct sctp_nets *net;
+ struct sctphdr sh;
+ struct udphdr udp;
+ struct sockaddr_in6 src, dst;
+ uint8_t type, code;
+
+ ip6cp = (struct ip6ctlparam *)d;
+ /*
+ * XXX: We assume that when IPV6 is non NULL, M and OFF are
+ * valid.
+ */
+ if (ip6cp->ip6c_m == NULL) {
+ return;
+ }
+ /* Check if we can safely examine the ports and the
+ * verification tag of the SCTP common header.
+ */
+ if (ip6cp->ip6c_m->m_pkthdr.len <
+ ip6cp->ip6c_off + sizeof(struct udphdr)+ offsetof(struct sctphdr, checksum)) {
+ return;
+ }
+ /* Copy out the UDP header. */
+ memset(&udp, 0, sizeof(struct udphdr));
+ m_copydata(ip6cp->ip6c_m,
+ ip6cp->ip6c_off,
+ sizeof(struct udphdr),
+ (caddr_t)&udp);
+ /* Copy out the port numbers and the verification tag. */
+ memset(&sh, 0, sizeof(struct sctphdr));
+ m_copydata(ip6cp->ip6c_m,
+ ip6cp->ip6c_off + sizeof(struct udphdr),
+ sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t),
+ (caddr_t)&sh);
+ memset(&src, 0, sizeof(struct sockaddr_in6));
+ src.sin6_family = AF_INET6;
+#ifdef HAVE_SIN6_LEN
+ src.sin6_len = sizeof(struct sockaddr_in6);
+#endif
+ src.sin6_port = sh.src_port;
+ src.sin6_addr = ip6cp->ip6c_ip6->ip6_src;
+#if defined(__FreeBSD__)
+ if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
+ return;
+ }
+#endif
+ memset(&dst, 0, sizeof(struct sockaddr_in6));
+ dst.sin6_family = AF_INET6;
+#ifdef HAVE_SIN6_LEN
+ dst.sin6_len = sizeof(struct sockaddr_in6);
+#endif
+ dst.sin6_port = sh.dest_port;
+ dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst;
+#if defined(__FreeBSD__)
+ if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
+ return;
+ }
+#endif
+ inp = NULL;
+ net = NULL;
+ stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
+ (struct sockaddr *)&src,
+ &inp, &net, 1, SCTP_DEFAULT_VRFID);
+ if ((stcb != NULL) &&
+ (net != NULL) &&
+ (inp != NULL)) {
+ /* Check the UDP port numbers */
+ if ((udp.uh_dport != net->port) ||
+ (udp.uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
+ SCTP_TCB_UNLOCK(stcb);
+ return;
+ }
+ /* Check the verification tag */
+ if (ntohl(sh.v_tag) != 0) {
+ /*
+ * This must be the verification tag used for
+ * sending out packets. We don't consider
+ * packets reflecting the verification tag.
+ */
+ if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) {
+ SCTP_TCB_UNLOCK(stcb);
+ return;
+ }
+ } else {
+#if defined(__FreeBSD__)
+ if (ip6cp->ip6c_m->m_pkthdr.len >=
+ ip6cp->ip6c_off + sizeof(struct udphdr) +
+ sizeof(struct sctphdr) +
+ sizeof(struct sctp_chunkhdr) +
+ offsetof(struct sctp_init, a_rwnd)) {
+ /*
+ * In this case we can check if we
+ * got an INIT chunk and if the
+ * initiate tag matches.
+ */
+ uint32_t initiate_tag;
+ uint8_t chunk_type;
+
+ m_copydata(ip6cp->ip6c_m,
+ ip6cp->ip6c_off +
+ sizeof(struct udphdr) +
+ sizeof(struct sctphdr),
+ sizeof(uint8_t),
+ (caddr_t)&chunk_type);
+ m_copydata(ip6cp->ip6c_m,
+ ip6cp->ip6c_off +
+ sizeof(struct udphdr) +
+ sizeof(struct sctphdr) +
+ sizeof(struct sctp_chunkhdr),
+ sizeof(uint32_t),
+ (caddr_t)&initiate_tag);
+ if ((chunk_type != SCTP_INITIATION) ||
+ (ntohl(initiate_tag) != stcb->asoc.my_vtag)) {
+ SCTP_TCB_UNLOCK(stcb);
+ return;
+ }
+ } else {
+ SCTP_TCB_UNLOCK(stcb);
+ return;
+ }
+#else
+ SCTP_TCB_UNLOCK(stcb);
+ return;
+#endif
+ }
+ type = ip6cp->ip6c_icmp6->icmp6_type;
+ code = ip6cp->ip6c_icmp6->icmp6_code;
+ if ((type == ICMP6_DST_UNREACH) &&
+ (code == ICMP6_DST_UNREACH_NOPORT)) {
+ type = ICMP6_PARAM_PROB;
+ code = ICMP6_PARAMPROB_NEXTHEADER;
+ }
+ sctp6_notify(inp, stcb, net, type, code,
+ (uint16_t)ntohl(ip6cp->ip6c_icmp6->icmp6_mtu));
+ } else {
+#if defined(__FreeBSD__) && __FreeBSD_version < 500000
+ if (PRC_IS_REDIRECT(cmd) && (inp != NULL)) {
+ in6_rtchange((struct in6pcb *)inp,
+ inet6ctlerrmap[cmd]);
+ }
+#endif
+ if ((stcb == NULL) && (inp != NULL)) {
+ /* reduce inp's ref-count */
+ SCTP_INP_WLOCK(inp);
+ SCTP_INP_DECR_REF(inp);
+ SCTP_INP_WUNLOCK(inp);
+ }
+ if (stcb) {
+ SCTP_TCB_UNLOCK(stcb);
+ }
+ }
+}
+#endif
+#endif
+
+void
+sctp_over_udp_stop(void)
+{
+ /*
+ * This function assumes sysctl caller holds sctp_sysctl_info_lock() for writting!
+ */
+#ifdef INET
+ if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
+ soclose(SCTP_BASE_INFO(udp4_tun_socket));
+ SCTP_BASE_INFO(udp4_tun_socket) = NULL;
+ }
+#endif
+#ifdef INET6
+ if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
+ soclose(SCTP_BASE_INFO(udp6_tun_socket));
+ SCTP_BASE_INFO(udp6_tun_socket) = NULL;
+ }
+#endif
+}
+
+int
+sctp_over_udp_start(void)
+{
+#if __FreeBSD_version >= 800044
+ uint16_t port;
+ int ret;
+#ifdef INET
+ struct sockaddr_in sin;
+#endif
+#ifdef INET6
+ struct sockaddr_in6 sin6;
+#endif
+ /*
+ * This function assumes sysctl caller holds sctp_sysctl_info_lock() for writting!
+ */
+ port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
+ if (ntohs(port) == 0) {
+ /* Must have a port set */
+ return (EINVAL);
+ }
+#ifdef INET
+ if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
+ /* Already running -- must stop first */
+ return (EALREADY);
+ }
+#endif
+#ifdef INET6
+ if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
+ /* Already running -- must stop first */
+ return (EALREADY);
+ }
+#endif
+#ifdef INET
+ if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
+ SOCK_DGRAM, IPPROTO_UDP,
+ curthread->td_ucred, curthread))) {
+ sctp_over_udp_stop();
+ return (ret);
+ }
+ /* Call the special UDP hook. */
+ if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
+ sctp_recv_udp_tunneled_packet,
+#if __FreeBSD_version >= 1100000
+ sctp_recv_icmp_tunneled_packet,
+#endif
+ NULL))) {
+ sctp_over_udp_stop();
+ return (ret);
+ }
+ /* Ok, we have a socket, bind it to the port. */
+ memset(&sin, 0, sizeof(struct sockaddr_in));
+ sin.sin_len = sizeof(struct sockaddr_in);
+ sin.sin_family = AF_INET;
+ sin.sin_port = htons(port);
+ if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
+ (struct sockaddr *)&sin, curthread))) {
+ sctp_over_udp_stop();
+ return (ret);
+ }
+#endif
+#ifdef INET6
+ if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
+ SOCK_DGRAM, IPPROTO_UDP,
+ curthread->td_ucred, curthread))) {
+ sctp_over_udp_stop();
+ return (ret);
+ }
+ /* Call the special UDP hook. */
+ if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
+ sctp_recv_udp_tunneled_packet,
+#if __FreeBSD_version >= 1100000
+ sctp_recv_icmp6_tunneled_packet,
+#endif
+ NULL))) {
+ sctp_over_udp_stop();
+ return (ret);
+ }
+ /* Ok, we have a socket, bind it to the port. */
+ memset(&sin6, 0, sizeof(struct sockaddr_in6));
+ sin6.sin6_len = sizeof(struct sockaddr_in6);
+ sin6.sin6_family = AF_INET6;
+ sin6.sin6_port = htons(port);
+ if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
+ (struct sockaddr *)&sin6, curthread))) {
+ sctp_over_udp_stop();
+ return (ret);
+ }
+#endif
+ return (0);
+#else
+ return (ENOTSUP);
+#endif
+}
+#endif